DP Chemistry (last assessment 2024)
Question 19M.3.sl.TZ1.b(i)
| Date | May 2019 | Marks available | [Maximum mark: 1] | Reference code | 19M.3.sl.TZ1.b(i) |
| Level | sl | Paper | 3 | Time zone | TZ1 |
| Command term | Describe | Question number | b(i) | Adapted from | N/A |
b(i).
[Maximum mark: 1]
19M.3.sl.TZ1.b(i)
Physical properties of elements vary according to atomic number. Sections 6 to 9 of the data booklet list some of these properties.
Describe the density trend across periods 4 and 5 of the periodic table.
[1]
Markscheme
density increases «to a maximum in the transition elements» AND then decreases [✔]
Examiners report
Most students realised that density peaks around the middle of each of these periods, though a significant minority seemed unaware of the significance of “periods” and just reported the overall general increase in density.
