1. MW5093
The three states of matter are represented in the diagrams below.
A B C
a) Identify the diagram that represents
i) a solid. A
ii) steam. C
b) Name a substance that could be represented by diagram B. Liquid_
c) Explain why substances represented by diagram C can be compressed, but the others
cannot.
The particles in A and B which are solid and Liquid they cant get any closer and the particles in
C are far apart.
d) Condensation is a change of state. Complete the condensation equation below by putting
one letter from the diagrams above (A, B, C) into each circle.

2. B
C
12:02
Strand Objective Level Resource type Integrating
strand MW5093
MW ob1a 5 BCR
-
Keywords
States; particle nature of matter; NCEA.
Description
Students are given diagrams representing the three states of matter. Students answer four questions
relating to these.
MW5093

3. Scoring: Answers/Responses: Answers/Resp
onses:
Answers/Resp
onses: Y10
(11/02)
1 mark a) i) A very easy
(for both correct) ii) C
1 mark b) Any liquid, e.g., water. moderate
1 mark c) The particles in C are far apart. difficult
1 mark The particles in C can be moved closer. difficult
1 mark The particles in A and B are already close difficult
and can’t get closer.
B d) moderate
C
1 mark
Total: 6 marks Total: 6 marks Total: 6 marks Total: 6 marks Total: 6 marks
Diagnostic information
Analysis of responses
d) Percentage of students giving each answer.
C → B: 49%
C → A: 7%
A → B: 10%
A → C: 17%
Missing/No answer: 17%