DP Chemistry (first assessment 2025)
Question 19M.1A.SL.TZ1.1
| Date | May 2019 | Marks available | [Maximum mark: 1] | Reference code | 19M.1A.SL.TZ1.1 |
| Level | SL | Paper | 1A | Time zone | TZ1 |
| Command term | Question number | 1 | Adapted from | N/A |
1.
[Maximum mark: 1]
19M.1A.SL.TZ1.1
Which diagram represents a heterogeneous mixture?
[1]
Markscheme
A
Examiners report
A few G2 forms suggested that candidates could have chosen A or B. However, homogeneous and heterogeneous mixtures are usually represented in such a way while only option A shows a clear separation in the mixture. We will avoid schematic diagrams in the future for this type of questions.
Syllabus sections
Structure 1. Models of the particulate nature of matter » Structure 1.1—Introduction to the particulate nature of matter » Structure 1.1.1- Elements, compounds and mixtures. Elements are the primary constituents of matter, which cannot be chemically broken down into simpler substances. Compounds consist of atoms of different elements chemically bonded together in a fixed ratio. Mixtures contain more than one element or compound in no fixed ratio, which are not chemically bonded and so can be separated by physical methods. Distinguish between the properties of elements, compounds and mixtures.