DP Chemistry (last assessment 2024)
Question 22M.2.sl.TZ2.d
| Date | May 2022 | Marks available | [Maximum mark: 2] | Reference code | 22M.2.sl.TZ2.d |
| Level | sl | Paper | 2 | Time zone | TZ2 |
| Command term | Describe | Question number | d | Adapted from | N/A |
d.
[Maximum mark: 2]
22M.2.sl.TZ2.d
Lithium reacts with water to form an alkaline solution.
Describe two observations that indicate the reaction of lithium with water is exothermic.
[2]
Markscheme
Any two:
temperature of the water increases ✔
lithium melts ✔
pop sound is heard ✔
Accept “lithium/hydrogen catches fire”.
Do not accept “smoke is observed”.
