🔬 Part 1: States of Matter and Particles

1. Which statement best describes particles in a solid?

Particles move freely and are far apart

Particles are tightly packed and vibrate in fixed positions

Particles move around each other but stay close together

Particles do not move at all

2. What happens to particles when a liquid evaporates?

They move closer together

They stop moving completely

They move faster and spread further apart

They become smaller in size

3. Which of these are physical changes? (Select all that apply)

Ice melting into water

Water boiling to become steam

Wood burning to ash

Water freezing into ice

4. Fill in the blanks about particle movement:

In a gas, particles move __________ and are __________ apart. When we cool a gas, the particles move __________ and may change into a __________.

✏️ Part 2: Explaining Particle Behaviour

5. Draw and label the particle arrangement in each state of matter:

Solid:

Liquid:

Gas:

6. Explain what happens to the particles when ice melts to become water. Include information about temperature and particle movement.

7. Give two everyday examples of each physical change:

Melting: _________________ and _________________

Freezing: _________________ and _________________

Evaporation: _________________ and _________________

🧪 Part 3: Apply Your Knowledge

8. On a hot summer day in Melbourne (35°C), you leave a glass of water outside. Predict what will happen and explain why using particle theory.

9. A student says: "When water turns to steam, the particles get bigger." Do you agree or disagree? Explain your answer.

10. Challenge: How might First Nations Australians have used their knowledge of materials and their properties? Give one example and explain the science behind it.

Matter and Particle Models

Matter and Particle Models

🔬 Part 1: States of Matter and Particles

✏️ Part 2: Explaining Particle Behaviour

🧪 Part 3: Apply Your Knowledge

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