Year 10 Matter Test

Name:

Date:

📚 Part 1: Multiple Choice (15 marks)

Choose the best answer for each question.

1. Which of the following best describes the arrangement of particles in a solid?

a) Particles are far apart and move freely

b) Particles are close together and vibrate in fixed positions

c) Particles are close together but can slide past each other

d) Particles have no regular arrangement

2. At what temperature does pure water boil at sea level?

a) 0°C

b) 50°C

c) 100°C

d) 150°C

3. Which state of matter has particles with the highest kinetic energy?

a) Solid

b) Liquid

c) Gas

d) All states have equal kinetic energy

4. The process of a liquid changing directly to a gas at its surface is called:

a) Condensation

b) Evaporation

c) Sublimation

d) Freezing

5. Which of the following are physical properties of matter? (Select all that apply)

a) Density

b) Flammability

c) Melting point

d) Colour

✏️ Part 2: Short Answer Questions (20 marks)

6. Complete the following sentences about particle theory: (4 marks)

a) All matter is made up of tiny _____________ that are constantly _____________.

b) The spaces between particles are _____________ in gases than in liquids.

c) When matter is heated, particles move _____________ and spread _____________.

7. Name the process for each state change: (4 marks)

a) Solid → Liquid: _____________

b) Gas → Liquid: _____________

c) Liquid → Gas: _____________

d) Solid → Gas: _____________

8. Explain why a gas can be compressed but a solid cannot be compressed easily. Use particle theory in your answer. (4 marks)

9. A student observes that when ice cubes are added to a warm drink, the ice melts and the drink becomes cooler. Explain what happens to the particles during this process. (4 marks)

10. List four factors that can affect the rate of evaporation of water. (4 marks)

📝 Part 3: Extended Response (15 marks)

11. A student conducts an experiment heating ice in a beaker until it becomes steam. Draw a particle diagram showing the arrangement and movement of particles in each of the three states of matter observed. Label each diagram clearly and explain how the particle arrangement and movement changes as heat is added. (8 marks)

12. Explain why different substances have different melting and boiling points. Use examples of at least two different substances and relate your answer to particle theory and intermolecular forces. (7 marks)