DP Chemistry (first assessment 2025)
Question 19N.2.SL.TZ0.a
| Date | November 2019 | Marks available | [Maximum mark: 2] | Reference code | 19N.2.SL.TZ0.a |
| Level | SL | Paper | 2 | Time zone | TZ0 |
| Command term | Apply, State | Question number | a | Adapted from | N/A |
a.
[Maximum mark: 2]
19N.2.SL.TZ0.a
State the names of two functional groups present in all three molecules, using section 37 of the data booklet.
[2]
Markscheme
Any two of:
benzene/aromatic ring ✔
«tertiary» amino «group» ✔
ethenylene/1,2-ethenediyl «group» ✔
ether «group» ✔
NOTE: Accept “phenyl” for “benzene ring” although there are no phenyl groups as the benzene ring in this compound is a part of a polycyclic structure.
Do not accept “arene” or “benzene” alone.
Accept “amine” for “amino «group»”.
Accept “alkenyl/alkene/vinylene” for ethenylene/1,2-ethenediyl «group».
Syllabus sections
Structure 3. Classification of matter » Structure 3.2—Functional groups: Classification of organic compounds » Structure 3.2.1—Organic compounds can be represented by different types of formulas. These include empirical, molecular, structural (full and condensed), stereochemical and skeletal. Identify different formulas and interconvert molecular, skeletal and structural formulas. Construct 3D models (real or virtual) of organic molecules.
Structure 3. Classification of matter » Structure 3.2—Functional groups: Classification of organic compounds » Structure 3.2.2—Functional groups give characteristic physical and chemical properties to a compound. Organic compounds are divided into classes according to the functional groups present in their molecules. Identify the following functional groups by name and structure: halogeno, hydroxyl, carbonyl, carboxyl, alkoxy, amino, amido, ester, phenyl.