1.
State what is meant by a solid. [1]
JD SCIENCE
Particles and kinetic theory
Answer all questions. Show working. Answers are in a separate file on the Worksheets page — do not look at them until you have finished.
2.
State what is meant by a liquid. [1]
3.
State what is meant by a gas. [1]
4.
State what is meant by density. [1]
5.
State what is meant by internal energy. [1]
6.
State what is meant by specific latent heat. [1]
7.
State what is meant by gas pressure. [1]
8.
State what is meant by Brownian motion. [1]
9.
State what is meant by absolute zero. [1]
10.
State what is meant by a change of state. [1]
11.
Owain is asked about a solid in a WJEC Physics paper.
(a) Describe a solid. [2]
(b) Explain why a solid is important in this topic. [3]
12.
Owain is asked about a liquid in a WJEC Physics paper.
(a) Describe a liquid. [2]
(b) Explain why a liquid is important in this topic. [3]
13.
Owain is asked about a gas in a WJEC Physics paper.
(a) Describe a gas. [2]
(b) Explain why a gas is important in this topic. [3]
14.
Owain is asked about density in a WJEC Physics paper.
(a) Describe density. [2]
(b) Explain why density is important in this topic. [3]
15.
Owain is asked about internal energy in a WJEC Physics paper.
(a) Describe internal energy. [2]
(b) Explain why internal energy is important in this topic. [3]
16.
Owain is asked about specific latent heat in a WJEC Physics paper.
(a) Describe specific latent heat. [2]
(b) Explain why specific latent heat is important in this topic. [3]
17.
Density of 40 g in 10 cm³ [3]
18.
Volume of 1.2 kg with density 400 kg/m³ [3]
19.
E = mL. 0.25 kg, L=2.3×10⁶ [3]
20.
Convert 27°C to kelvin [3]
21.
A gas is heated from 200 K to 400 K at constant V. What happens to pressure? [3]
22.
Mass of 2.0 m³ of air at 1.2 kg/m³ [3]
23.
Owain carries out a WJEC-style required practical linked to particle model of matter. This is a typical WJEC required-practical style question.
(a) Identify the independent variable and the dependent variable. [2]
(b) State one control variable and explain why it must be controlled. [2]
(c) Suggest one improvement or source of error and how it affects the result. [2]
24.
Owain carries out collecting valid data for particle model of matter. This is a typical WJEC required-practical style question.
(a) Identify the independent variable and the dependent variable. [2]
(b) State one control variable and explain why it must be controlled. [2]
(c) Suggest one improvement or source of error and how it affects the result. [2]
25.
Owain carries out drawing a graph for particle model of matter. This is a typical WJEC required-practical style question.
(a) Identify the independent variable and the dependent variable. [2]
(b) State one control variable and explain why it must be controlled. [2]
(c) Suggest one improvement or source of error and how it affects the result. [2]
26.
Owain carries out evaluating a method about particle model of matter. This is a typical WJEC required-practical style question.
(a) Identify the independent variable and the dependent variable. [2]
(b) State one control variable and explain why it must be controlled. [2]
(c) Suggest one improvement or source of error and how it affects the result. [2]
27.
Compare a solid with a liquid. [4]
28.
Compare a liquid with a gas. [4]
29.
Compare a gas with density. [4]
30.
Compare density with internal energy. [4]
31.
Apply your knowledge of gas pressure to this situation: more frequent if T or N increases [3]
32.
Apply your knowledge of Brownian motion to this situation: caused by unseen particles colliding [3]