1.1 Introduction to the particulate nature of matter and chemical change

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Directly related questions

21M.1.sl.TZ2.4:
What is the sum of the coefficients when the equation is balanced with whole numbers?

__Sn(OH)₄(aq) + __NaOH (aq) → __Na₂SnO₃(aq) + __H₂O (l)

A. 4

B. 5

C. 6

D. 7
21M.1.sl.TZ2.4:
What is the sum of the coefficients when the equation is balanced with whole numbers?

__Sn(OH)₄(aq) + __NaOH (aq) → __Na₂SnO₃(aq) + __H₂O (l)

A. 4

B. 5

C. 6

D. 7
21M.2.sl.TZ1.1d(i):
Write the equation for this reaction.
21M.2.sl.TZ1.1d(i):
Write the equation for this reaction.
21M.2.sl.TZ1.d(i):
Write the equation for this reaction.
21M.2.sl.TZ1.3a: Deduce the ratio of Fe2+:Fe3+ in Fe3O4.
21M.2.sl.TZ1.3a: Deduce the ratio of Fe2+:Fe3+ in Fe3O4.
21M.2.sl.TZ1.a: Deduce the ratio of Fe2+:Fe3+ in Fe3O4.
21M.2.hl.TZ1.1e(i):
Write the equation for this reaction.
21M.2.hl.TZ1.1e(i):
Write the equation for this reaction.
21M.2.hl.TZ1.e(i):
Write the equation for this reaction.
21M.2.hl.TZ1.4c(i):
Determine the overall equation for the production of methanol.
21M.2.hl.TZ1.4c(i):
Determine the overall equation for the production of methanol.
21M.2.hl.TZ1.c(i):
Determine the overall equation for the production of methanol.
21M.2.hl.TZ2.5a(i):
Write the chemical equation for the complete combustion of ethanol.
21M.2.hl.TZ2.5a(i):
Write the chemical equation for the complete combustion of ethanol.
21M.2.hl.TZ2.a(i):
Write the chemical equation for the complete combustion of ethanol.
18M.2.hl.TZ2.1g:
Outline why repeating quantitative measurements is important.
18M.2.hl.TZ2.1g:
Outline why repeating quantitative measurements is important.
18M.2.hl.TZ2.g:
Outline why repeating quantitative measurements is important.
18M.2.hl.TZ1.1f:
The combustion of urea produces water, carbon dioxide and nitrogen.

Formulate a balanced equation for the reaction.
18M.2.hl.TZ1.1f:
The combustion of urea produces water, carbon dioxide and nitrogen.

Formulate a balanced equation for the reaction.
18M.2.hl.TZ1.f:
The combustion of urea produces water, carbon dioxide and nitrogen.

Formulate a balanced equation for the reaction.
18M.1.sl.TZ1.1: Which is a homogeneous mixture? A. Oil and water B. Sand and water C. Ethanol and...
18M.1.sl.TZ1.1: Which is a homogeneous mixture? A. Oil and water B. Sand and water C. Ethanol and...
18M.2.sl.TZ2.1b:
Formulate the equation for the reaction of H₂SO₄ with Mg(OH)₂.
18M.2.sl.TZ2.1b:
Formulate the equation for the reaction of H₂SO₄ with Mg(OH)₂.
18M.2.sl.TZ2.b:
Formulate the equation for the reaction of H₂SO₄ with Mg(OH)₂.
21N.1.sl.TZ0.2: Which statement describes all homogeneous mixtures? A. Any sample has the same ratio of the...
21N.1.sl.TZ0.2: Which statement describes all homogeneous mixtures? A. Any sample has the same ratio of the...
21N.2.hl.TZ0.3a(ii):
Write an equation for the reaction of white phosphorus (P₄) with chlorine gas to form phosphorus trichloride (PCl₃).
21N.2.hl.TZ0.3a(ii):
Write an equation for the reaction of white phosphorus (P₄) with chlorine gas to form phosphorus trichloride (PCl₃).
21N.2.hl.TZ0.a(ii):
Write an equation for the reaction of white phosphorus (P₄) with chlorine gas to form phosphorus trichloride (PCl₃).
21N.2.hl.TZ0.5a:
Formulate an equation for the reaction of one mole of phosphoric acid with one mole of sodium hydroxide.
21N.2.hl.TZ0.5a:
Formulate an equation for the reaction of one mole of phosphoric acid with one mole of sodium hydroxide.
21N.2.hl.TZ0.a:
Formulate an equation for the reaction of one mole of phosphoric acid with one mole of sodium hydroxide.
22M.2.hl.TZ1.1a(i):
Write a balanced equation for the reaction that occurs.
22M.2.hl.TZ1.1a(i):
Write a balanced equation for the reaction that occurs.
22M.2.hl.TZ1.a(i):
Write a balanced equation for the reaction that occurs.
22M.2.hl.TZ1.1d(i):
Calculate coefficients that balance the equation for the following reaction.
22M.2.hl.TZ1.1d(i):
Calculate coefficients that balance the equation for the following reaction.
22M.2.hl.TZ1.d(i):
Calculate coefficients that balance the equation for the following reaction.
19M.3.hl.TZ1.1a:
Deduce, giving a reason, the group of elements in the periodic table most likely to undergo sublimation.
19M.3.hl.TZ1.1a:
Deduce, giving a reason, the group of elements in the periodic table most likely to undergo sublimation.
19M.3.hl.TZ1.a:
Deduce, giving a reason, the group of elements in the periodic table most likely to undergo sublimation.
19M.1.hl.TZ1.1: Which diagram represents a heterogeneous mixture?
19M.1.hl.TZ1.1: Which diagram represents a heterogeneous mixture?
19M.1.hl.TZ2.2:
What is the sum of the integer coefficients when propene undergoes complete combustion?

__C₃H₆ (g) + __O₂ (g) → __CO₂ (g) + __H₂O (l)

A. 11

B. 17

C. 21

D. 23
19M.1.hl.TZ2.2:
What is the sum of the integer coefficients when propene undergoes complete combustion?

__C₃H₆ (g) + __O₂ (g) → __CO₂ (g) + __H₂O (l)

A. 11

B. 17

C. 21

D. 23
19M.2.sl.TZ1.3d:
The reaction of sodium peroxide with excess water produces hydrogen peroxide and one other sodium compound. Suggest the formula of this compound.
19M.2.sl.TZ1.3d:
The reaction of sodium peroxide with excess water produces hydrogen peroxide and one other sodium compound. Suggest the formula of this compound.
19M.2.sl.TZ1.d:
The reaction of sodium peroxide with excess water produces hydrogen peroxide and one other sodium compound. Suggest the formula of this compound.
19M.1.sl.TZ1.2:
What is the sum of the coefficients when the equation is balanced with the smallest whole numbers?

__BaCl₂ (aq) + __Fe₂(SO₄)₃ (aq) → __FeCl₃ (aq) + __BaSO₄ (s)

A. 4

B. 6

C. 8

D. 9
19M.1.sl.TZ1.2:
What is the sum of the coefficients when the equation is balanced with the smallest whole numbers?

__BaCl₂ (aq) + __Fe₂(SO₄)₃ (aq) → __FeCl₃ (aq) + __BaSO₄ (s)

A. 4

B. 6

C. 8

D. 9
19M.1.sl.TZ2.2:
What is the sum of the integer coefficients when propene undergoes complete combustion?

__C₃H₆ (g) + __O₂ (g) → __CO₂ (g) + __H₂O (l)

A. 11

B. 17

C. 21

D. 23
19M.1.sl.TZ2.2:
What is the sum of the integer coefficients when propene undergoes complete combustion?

__C₃H₆ (g) + __O₂ (g) → __CO₂ (g) + __H₂O (l)

A. 11

B. 17

C. 21

D. 23
19M.1.sl.TZ1.1: Which diagram represents a heterogeneous mixture?
19M.1.sl.TZ1.1: Which diagram represents a heterogeneous mixture?
19N.2.sl.TZ0.2a(i): Determine the mole ratio of S2O32− to O2, using the balanced equations.
19N.2.sl.TZ0.2a(i): Determine the mole ratio of S2O32− to O2, using the balanced equations.
19N.2.sl.TZ0.a(i): Determine the mole ratio of S2O32− to O2, using the balanced equations.
19N.1.sl.TZ0.2:
What is the sum of the coefficients when the equation is balanced with whole numbers?

__MnO₂ (s) + __HCl (aq) → __MnCl₂ (aq) + __H₂O (l) + __Cl₂ (g)

A. 6

B. 7

C. 8

D. 9
19N.1.sl.TZ0.2:
What is the sum of the coefficients when the equation is balanced with whole numbers?

__MnO₂ (s) + __HCl (aq) → __MnCl₂ (aq) + __H₂O (l) + __Cl₂ (g)

A. 6

B. 7

C. 8

D. 9
19N.2.sl.TZ0.5c(ii):
Write the half-equation for the formation of gas bubbles at electrode 1.
19N.2.sl.TZ0.5c(ii):
Write the half-equation for the formation of gas bubbles at electrode 1.
19N.2.sl.TZ0.c(ii):
Write the half-equation for the formation of gas bubbles at electrode 1.
19N.1.sl.TZ0.3: Which is correct? A. Mixtures are either homogeneous or heterogeneous and their chemical...
19N.1.sl.TZ0.3: Which is correct? A. Mixtures are either homogeneous or heterogeneous and their chemical...
22N.2.hl.TZ0.1f.i:
Write the chemical equation for this decomposition.
22N.2.hl.TZ0.1f.i:
Write the chemical equation for this decomposition.
22N.2.hl.TZ0.f.i:
Write the chemical equation for this decomposition.
17N.1.sl.TZ0.4:
What is the sum of the coefficients when the following equation is balanced using the smallest whole numbers?

__C₆H₁₂O₆ (aq) → __C₂H₅OH (aq) + __CO₂ (g)

A. 4

B. 5

C. 9

D. 10
17N.1.sl.TZ0.4:
What is the sum of the coefficients when the following equation is balanced using the smallest whole numbers?

__C₆H₁₂O₆ (aq) → __C₂H₅OH (aq) + __CO₂ (g)

A. 4

B. 5

C. 9

D. 10
18M.2.sl.TZ1.1f:
The combustion of urea produces water, carbon dioxide and nitrogen.

Formulate a balanced equation for the reaction.
18M.2.sl.TZ1.1f:
The combustion of urea produces water, carbon dioxide and nitrogen.

Formulate a balanced equation for the reaction.
18M.2.sl.TZ1.f:
The combustion of urea produces water, carbon dioxide and nitrogen.

Formulate a balanced equation for the reaction.
18M.3.sl.TZ1.2a:
Annotate the balanced equation below with state symbols.

CaCO₃(__) + 2HCl(__) → CaCl₂(__) + CO₂(__) + H₂O(__)
18M.3.sl.TZ1.2a:
Annotate the balanced equation below with state symbols.

CaCO₃(__) + 2HCl(__) → CaCl₂(__) + CO₂(__) + H₂O(__)
18M.3.sl.TZ1.a:
Annotate the balanced equation below with state symbols.

CaCO₃(__) + 2HCl(__) → CaCl₂(__) + CO₂(__) + H₂O(__)
18M.1.sl.TZ2.1:
What is the sum of the coefficients when the equation is balanced with the lowest whole number ratio?

__Na₂S₂O₃(aq) + __HCl(aq) → __S(s) + __SO₂(g) + __NaCl(aq) + __H₂O(l)

A. 6

B. 7

C. 8

D. 9
18M.1.sl.TZ2.1:
What is the sum of the coefficients when the equation is balanced with the lowest whole number ratio?

__Na₂S₂O₃(aq) + __HCl(aq) → __S(s) + __SO₂(g) + __NaCl(aq) + __H₂O(l)

A. 6

B. 7

C. 8

D. 9
18N.2.sl.TZ0.5a: State why this equilibrium reaction is considered homogeneous.
18N.2.sl.TZ0.5a: State why this equilibrium reaction is considered homogeneous.
18N.2.sl.TZ0.a: State why this equilibrium reaction is considered homogeneous.
18N.2.hl.TZ0.5a: State why this equilibrium reaction is considered homogeneous.
18N.2.hl.TZ0.5a: State why this equilibrium reaction is considered homogeneous.
18N.2.hl.TZ0.a: State why this equilibrium reaction is considered homogeneous.
19M.2.hl.TZ1.2f(ii):
Formulate the equation for the complete combustion of benzoic acid in oxygen using only integer coefficients.
19M.2.hl.TZ1.2f(ii):
Formulate the equation for the complete combustion of benzoic acid in oxygen using only integer coefficients.
19M.2.hl.TZ1.f(ii):
Formulate the equation for the complete combustion of benzoic acid in oxygen using only integer coefficients.
19M.2.hl.TZ1.3j:
The reaction of sodium peroxide with excess water produces hydrogen peroxide and one other sodium compound. Suggest the formula of this compound.
19M.2.hl.TZ1.3j:
The reaction of sodium peroxide with excess water produces hydrogen peroxide and one other sodium compound. Suggest the formula of this compound.
19M.2.hl.TZ1.j:
The reaction of sodium peroxide with excess water produces hydrogen peroxide and one other sodium compound. Suggest the formula of this compound.
19M.2.sl.TZ1.2b(ii):
Formulate the equation for the complete combustion of benzoic acid in oxygen using only integer coefficients.
19M.2.sl.TZ1.2b(ii):
Formulate the equation for the complete combustion of benzoic acid in oxygen using only integer coefficients.
19M.2.sl.TZ1.b(ii):
Formulate the equation for the complete combustion of benzoic acid in oxygen using only integer coefficients.
19M.3.sl.TZ1.1a:
Deduce, giving a reason, the group of elements in the periodic table most likely to undergo sublimation.
19M.3.sl.TZ1.1a:
Deduce, giving a reason, the group of elements in the periodic table most likely to undergo sublimation.
19M.3.sl.TZ1.a:
Deduce, giving a reason, the group of elements in the periodic table most likely to undergo sublimation.
19N.2.hl.TZ0.3c(i):
Write an equation for the complete combustion of the compound C₃H₈O formed in (a)(iv).
19N.2.hl.TZ0.3c(i):
Write an equation for the complete combustion of the compound C₃H₈O formed in (a)(iv).
19N.2.hl.TZ0.c(i):
Write an equation for the complete combustion of the compound C₃H₈O formed in (a)(iv).
19N.2.hl.TZ0.6c(ii):
Write the half-equation for the formation of gas bubbles at electrode 1.
19N.2.hl.TZ0.6c(ii):
Write the half-equation for the formation of gas bubbles at electrode 1.
19N.2.hl.TZ0.c(ii):
Write the half-equation for the formation of gas bubbles at electrode 1.
19N.2.hl.TZ0.6c(iv):
Deduce the half-equation for the formation of the gas identified in (c)(iii).
19N.2.hl.TZ0.6c(iv):
Deduce the half-equation for the formation of the gas identified in (c)(iii).
19N.2.hl.TZ0.c(iv):
Deduce the half-equation for the formation of the gas identified in (c)(iii).
19N.2.sl.TZ0.6a(i):
Deduce the equation for the decomposition of guanidinium nitrate.
19N.2.sl.TZ0.6a(i):
Deduce the equation for the decomposition of guanidinium nitrate.
19N.2.sl.TZ0.a(i):
Deduce the equation for the decomposition of guanidinium nitrate.
19N.2.sl.TZ0.6b:
Another airbag reactant produces nitrogen gas and sodium.

Suggest, including an equation, why the products of this reactant present a safety hazard.
19N.2.sl.TZ0.6b:
Another airbag reactant produces nitrogen gas and sodium.

Suggest, including an equation, why the products of this reactant present a safety hazard.
19N.2.sl.TZ0.b:
Another airbag reactant produces nitrogen gas and sodium.

Suggest, including an equation, why the products of this reactant present a safety hazard.
19N.2.sl.TZ0.3b:
Write an equation for the reaction of C₂H₅Cl with aqueous sodium hydroxide to produce a C₂H₆O compound, showing structural formulas.
19N.2.sl.TZ0.3b:
Write an equation for the reaction of C₂H₅Cl with aqueous sodium hydroxide to produce a C₂H₆O compound, showing structural formulas.
19N.2.sl.TZ0.b:
Write an equation for the reaction of C₂H₅Cl with aqueous sodium hydroxide to produce a C₂H₆O compound, showing structural formulas.
19N.2.sl.TZ0.3c(i):
Write an equation for the complete combustion of the organic product in (b).
19N.2.sl.TZ0.3c(i):
Write an equation for the complete combustion of the organic product in (b).
19N.2.sl.TZ0.c(i):
Write an equation for the complete combustion of the organic product in (b).
20N.2.sl.TZ0.1d(iii):
Write the equation for the reaction of chloroethane with a dilute aqueous solution of sodium hydroxide.
20N.2.sl.TZ0.1d(iii):
Write the equation for the reaction of chloroethane with a dilute aqueous solution of sodium hydroxide.
20N.2.sl.TZ0.d(iii):
Write the equation for the reaction of chloroethane with a dilute aqueous solution of sodium hydroxide.
20N.2.hl.TZ0.5a:
Write a balanced equation for the reaction.
20N.2.hl.TZ0.5a:
Write a balanced equation for the reaction.
20N.2.hl.TZ0.a:
Write a balanced equation for the reaction.
20N.3.sl.TZ0.2f:
Comment on the magnitudes of random and systematic errors in this experiment using the answers in (e).
20N.3.sl.TZ0.2f:
Comment on the magnitudes of random and systematic errors in this experiment using the answers in (e).
20N.3.sl.TZ0.f:
Comment on the magnitudes of random and systematic errors in this experiment using the answers in (e).
21M.1.sl.TZ1.4:
What is the coefficient of $HCl$ (aq) when the equation is balanced using the smallest possible whole numbers?

$__CuO (s)+ __HCl {(aq) → __CuCl}_{2} {(aq) + __H}_{2} O (l)$

A. 1

B. 2

C. 3

D. 4
21M.1.sl.TZ1.4:
What is the coefficient of $HCl$ (aq) when the equation is balanced using the smallest possible whole numbers?

$__CuO (s)+ __HCl {(aq) → __CuCl}_{2} {(aq) + __H}_{2} O (l)$

A. 1

B. 2

C. 3

D. 4
21M.2.sl.TZ1.4c(i):
Determine the overall equation for the production of methanol.
21M.2.sl.TZ1.4c(i):
Determine the overall equation for the production of methanol.
21M.2.sl.TZ1.c(i):
Determine the overall equation for the production of methanol.
21M.2.hl.TZ1.3a: Deduce the ratio of Fe2+:Fe3+ in Fe3O4.
21M.2.hl.TZ1.3a: Deduce the ratio of Fe2+:Fe3+ in Fe3O4.
21M.2.hl.TZ1.a: Deduce the ratio of Fe2+:Fe3+ in Fe3O4.
21M.2.sl.TZ2.1d(i):
Write the equation for the reaction of Ca(OH)₂ (aq) with hydrochloric acid, HCl (aq).
21M.2.sl.TZ2.d(i):
Write the equation for the reaction of Ca(OH)₂ (aq) with hydrochloric acid, HCl (aq).
21M.2.sl.TZ2.1d(i):
Write the equation for the reaction of Ca(OH)₂ (aq) with hydrochloric acid, HCl (aq).
21M.2.hl.TZ2.1c(i):
Write the equation for the reaction of Ca(OH)₂(aq) with hydrochloric acid, HCl (aq).
21M.2.hl.TZ2.1c(i):
Write the equation for the reaction of Ca(OH)₂(aq) with hydrochloric acid, HCl (aq).
21M.2.hl.TZ2.c(i):
Write the equation for the reaction of Ca(OH)₂(aq) with hydrochloric acid, HCl (aq).
21N.2.sl.TZ0.3a(ii):
Write an equation for the reaction of white phosphorus (P₄) with chlorine gas to form phosphorus trichloride (PCl₃).
21N.2.sl.TZ0.3a(ii):
Write an equation for the reaction of white phosphorus (P₄) with chlorine gas to form phosphorus trichloride (PCl₃).
21N.2.sl.TZ0.a(ii):
Write an equation for the reaction of white phosphorus (P₄) with chlorine gas to form phosphorus trichloride (PCl₃).
21N.2.sl.TZ0.5a:
Formulate an equation for the reaction of one mole of phosphoric acid with one mole of sodium hydroxide.
21N.2.sl.TZ0.5a:
Formulate an equation for the reaction of one mole of phosphoric acid with one mole of sodium hydroxide.
21N.2.sl.TZ0.a:
Formulate an equation for the reaction of one mole of phosphoric acid with one mole of sodium hydroxide.
22M.1.sl.TZ2.4:
Which equation represents the deposition of iodine?

A. I₂(g) → I₂(l)

B. I₂(g) → I₂(s)

C. I₂(l) → I₂(g)

D. I₂(s) → I₂(g)
22M.1.sl.TZ2.4:
Which equation represents the deposition of iodine?

A. I₂(g) → I₂(l)

B. I₂(g) → I₂(s)

C. I₂(l) → I₂(g)

D. I₂(s) → I₂(g)
22M.2.sl.TZ1.1a(i):
Write a balanced equation for the reaction that occurs.
22M.2.sl.TZ1.1a(i):
Write a balanced equation for the reaction that occurs.
22M.2.sl.TZ1.a(i):
Write a balanced equation for the reaction that occurs.
22M.2.sl.TZ1.1d(i):
Calculate coefficients that balance the equation for the following reaction.

__ Mg₃N₂(s) + __ H₂O (l) → __ Mg(OH)₂(s) + __ NH₃(aq)
22M.2.sl.TZ1.1d(i):
Calculate coefficients that balance the equation for the following reaction.

__ Mg₃N₂(s) + __ H₂O (l) → __ Mg(OH)₂(s) + __ NH₃(aq)
22M.2.sl.TZ1.d(i):
Calculate coefficients that balance the equation for the following reaction.

__ Mg₃N₂(s) + __ H₂O (l) → __ Mg(OH)₂(s) + __ NH₃(aq)
22M.2.sl.TZ2.1a:
Determine the coefficients that balance the equation for the reaction of lithium with water.
22M.2.sl.TZ2.1a:
Determine the coefficients that balance the equation for the reaction of lithium with water.
22M.2.sl.TZ2.a:
Determine the coefficients that balance the equation for the reaction of lithium with water.
22N.1.sl.TZ0.2: What is the change of state for a gas to a solid? A. Condensation B. Deposition C. ...
22N.1.sl.TZ0.2: What is the change of state for a gas to a solid? A. Condensation B. Deposition C. ...
22N.1.hl.TZ0.29:
What is the coefficient for H⁺ when the equation below is balanced?

__Pb (s) + __NO₃⁻ (aq) + __H⁺ (aq) → __Pb²⁺ (aq) + __NO (g) + __H₂O (l)

A. 2

B.  4

C.  6

D.  8
22N.1.hl.TZ0.29:
What is the coefficient for H⁺ when the equation below is balanced?

__Pb (s) + __NO₃⁻ (aq) + __H⁺ (aq) → __Pb²⁺ (aq) + __NO (g) + __H₂O (l)

A. 2

B.  4

C.  6

D.  8
22N.2.sl.TZ0.1f.i:
Write the chemical equation for this decomposition.
22N.2.sl.TZ0.1f.i:
Write the chemical equation for this decomposition.
22N.2.sl.TZ0.f.i:
Write the chemical equation for this decomposition.
22N.2.hl.TZ0.1c.ii:
Ammonium nitrate is neutralized with sodium hydroxide. Write the equation for the reaction.
22N.2.hl.TZ0.1c.ii:
Ammonium nitrate is neutralized with sodium hydroxide. Write the equation for the reaction.
22N.2.hl.TZ0.c.ii:
Ammonium nitrate is neutralized with sodium hydroxide. Write the equation for the reaction.
23M.1.HL.TZ1.10: Why does the melting point of the elements decrease down group 1? A. Atomic mass increases B. ...
23M.1.SL.TZ1.11: Why does the melting point of the elements decrease down group 1? A. Atomic mass increases B. ...
23M.1.HL.TZ1.10: Why does the melting point of the elements decrease down group 1? A. Atomic mass increases B. ...
23M.1.SL.TZ1.11: Why does the melting point of the elements decrease down group 1? A. Atomic mass increases B. ...
23M.1.HL.TZ1.5: Which statement best explains the first ionization energy of sulfur being lower than that of...
23M.1.HL.TZ1.5: Which statement best explains the first ionization energy of sulfur being lower than that of...
23M.1.HL.TZ1.7:
In the following unbalanced equation, X represents an element.

Which oxide reacts with water as shown?

____ + H₂O → X(OH)₂

A. Na₂O

B. MgO

C. NO₂

D. SO₃
23M.1.HL.TZ1.7:
In the following unbalanced equation, X represents an element.

Which oxide reacts with water as shown?

____ + H₂O → X(OH)₂

A. Na₂O

B. MgO

C. NO₂

D. SO₃
23M.1.HL.TZ1.6: What can be deduced from the period number of an element? Highest occupied energy level Number...
23M.1.SL.TZ1.8: What can be deduced from the period number of an element? Highest occupied energy level Number...
23M.1.HL.TZ1.6: What can be deduced from the period number of an element? Highest occupied energy level Number...
23M.1.SL.TZ1.8: What can be deduced from the period number of an element? Highest occupied energy level Number...
23M.1.HL.TZ1.8: Which element is not a transition metal? A. Cr B. Mn C. Ni D. Zn
23M.1.HL.TZ1.8: Which element is not a transition metal? A. Cr B. Mn C. Ni D. Zn
23M.1.HL.TZ1.9: Which substance is likely to have an ionic lattice structure at 298 K and 100 kPa? Melting...
23M.1.SL.TZ1.10: Which substance is likely to have an ionic lattice structure at 298 K and 100 kPa? Melting...
23M.1.HL.TZ1.9: Which substance is likely to have an ionic lattice structure at 298 K and 100 kPa? Melting...
23M.1.SL.TZ1.10: Which substance is likely to have an ionic lattice structure at 298 K and 100 kPa? Melting...
23M.1.SL.TZ1.9: How many electrons will be gained or lost when the element with electron configuration...
23M.1.SL.TZ1.9: How many electrons will be gained or lost when the element with electron configuration...
23M.1.SL.TZ1.12: In which molecule does the central atom have an incomplete octet of electrons? A. H2Se B. ...
23M.1.HL.TZ1.11: In which molecule does the central atom have an incomplete octet of electrons? A. H2Se B. ...
23M.1.HL.TZ1.11: In which molecule does the central atom have an incomplete octet of electrons? A. H2Se B. ...
23M.1.SL.TZ1.12: In which molecule does the central atom have an incomplete octet of electrons? A. H2Se B. ...
23M.1.SL.TZ1.16: What is represented by the dotted line on the enthalpy profile? A. Reaction carried out at a...
23M.1.SL.TZ1.16: What is represented by the dotted line on the enthalpy profile? A. Reaction carried out at a...
23M.1.SL.TZ1.19: Which products are formed from the neutralization of nitric acid by calcium hydroxide? A. ...
23M.1.SL.TZ1.19: Which products are formed from the neutralization of nitric acid by calcium hydroxide? A. ...
23M.1.SL.TZ1.25: Which statement explains the increase in boiling point for the homologous series of the primary...
23M.1.SL.TZ1.25: Which statement explains the increase in boiling point for the homologous series of the primary...
23M.1.SL.TZ1.20: Which combination describes a strong Brønsted–Lowry acid? Proton donor Conjugate...
23M.1.SL.TZ1.20: Which combination describes a strong Brønsted–Lowry acid? Proton donor Conjugate...
23M.1.SL.TZ1.26: Why does benzene undergo substitution more readily than addition? A. Benzene is unsaturated. B. ...
23M.1.SL.TZ1.26: Why does benzene undergo substitution more readily than addition? A. Benzene is unsaturated. B. ...
23M.1.SL.TZ2.9: Which compound is both volatile and soluble in water? A. NaCl B. CH3CH2CH3 C. CH3OH D. C12H22O11
23M.1.SL.TZ2.9: Which compound is both volatile and soluble in water? A. NaCl B. CH3CH2CH3 C. CH3OH D. C12H22O11
23M.1.SL.TZ2.10:
Which are the correct sequences of increasing bond strengths and bond lengths between two carbon atoms?

Bond strength Bond length

A.   $C \equiv C < C = C < C - C$ $C \equiv C < C = C < C - C$

B.   $C \equiv C < C = C < C - C$ $C - C < C = C < C \equiv C$

C.   $C - C < C = C < C \equiv C$ $C \equiv C < C = C < C - C$

D.   $C - C < C = C < C \equiv C$ $C - C < C = C < C \equiv C$
23M.1.SL.TZ2.10:
Which are the correct sequences of increasing bond strengths and bond lengths between two carbon atoms?

Bond strength Bond length

A.   $C \equiv C < C = C < C - C$ $C \equiv C < C = C < C - C$

B.   $C \equiv C < C = C < C - C$ $C - C < C = C < C \equiv C$

C.   $C - C < C = C < C \equiv C$ $C \equiv C < C = C < C - C$

D.   $C - C < C = C < C \equiv C$ $C - C < C = C < C \equiv C$
23M.1.SL.TZ2.11: What is the electron domain geometry of sulfur dioxide, SO2? A. bent B. linear C. ...
23M.1.SL.TZ2.11: What is the electron domain geometry of sulfur dioxide, SO2? A. bent B. linear C. ...
23M.1.HL.TZ2.11: What is the correct comparison of H–N–H bond angles in NH2-, NH3, and NH4+? A. NH2− < NH3...
23M.1.SL.TZ2.12: What is the correct comparison of H–N–H bond angles in NH2-, NH3, and NH4+? A. NH2− < NH3...
23M.1.HL.TZ2.11: What is the correct comparison of H–N–H bond angles in NH2-, NH3, and NH4+? A. NH2− < NH3...
23M.1.SL.TZ2.12: What is the correct comparison of H–N–H bond angles in NH2-, NH3, and NH4+? A. NH2− < NH3...
23M.1.SL.TZ2.17: A potential energy profile is shown for a reaction. Which energy changes would a catalyst...
23M.1.SL.TZ2.17: A potential energy profile is shown for a reaction. Which energy changes would a catalyst...
23M.1.SL.TZ2.18:
Which condition will cause the given equilibrium to shift to the right?

Ag⁺ (aq) + Cl⁻ (aq) ⇌ AgCl (s)

A. One half of solid AgCl is removed.

B. Water is added.

C. Solid NaCl is added.

D. The system is subjected to increased pressure.
23M.1.SL.TZ2.18:
Which condition will cause the given equilibrium to shift to the right?

Ag⁺ (aq) + Cl⁻ (aq) ⇌ AgCl (s)

A. One half of solid AgCl is removed.

B. Water is added.

C. Solid NaCl is added.

D. The system is subjected to increased pressure.
23M.2.HL.TZ1.1ai:
Deduce the ionic equation, including state symbols, for the reaction of hydrogen chloride gas with water.
23M.2.HL.TZ1.1ai:
Deduce the ionic equation, including state symbols, for the reaction of hydrogen chloride gas with water.
23M.2.HL.TZ1.i:
Deduce the ionic equation, including state symbols, for the reaction of hydrogen chloride gas with water.
23M.2.HL.TZ1.8:
A series of experiments were carried out at different temperatures and the rate of reaction, in mol dm⁻³s⁻¹, was determined for each. The rate constant for the reaction of propanone (CH₃COCH₃) with iodine (I₂) was calculated and the processed data is represented in the following graph.

Determine the activation energy for this reaction, stating the units. Use sections 1 and 2 of the data booklet.
23M.2.HL.TZ1.8:
A series of experiments were carried out at different temperatures and the rate of reaction, in mol dm⁻³s⁻¹, was determined for each. The rate constant for the reaction of propanone (CH₃COCH₃) with iodine (I₂) was calculated and the processed data is represented in the following graph.

Determine the activation energy for this reaction, stating the units. Use sections 1 and 2 of the data booklet.
23M.2.HL.TZ2.5a:
The concentration of methanoic acid was found by titration with a 0.200 mol dm⁻³ standard solution of sodium hydroxide, NaOH (aq), using an indicator to determine the end point.
23M.2.HL.TZ2.5a:
The concentration of methanoic acid was found by titration with a 0.200 mol dm⁻³ standard solution of sodium hydroxide, NaOH (aq), using an indicator to determine the end point.
23M.2.HL.TZ2.a:
The concentration of methanoic acid was found by titration with a 0.200 mol dm⁻³ standard solution of sodium hydroxide, NaOH (aq), using an indicator to determine the end point.

Sub sections and their related questions

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	Bond strength	Bond length
A.	$C \equiv C < C = C < C - C$	$C \equiv C < C = C < C - C$
B.	$C \equiv C < C = C < C - C$	$C - C < C = C < C \equiv C$
C.	$C - C < C = C < C \equiv C$	$C \equiv C < C = C < C - C$
D.	$C - C < C = C < C \equiv C$	$C - C < C = C < C \equiv C$

1.1 Introduction to the particulate nature of matter and chemical change

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