🎈 Part 1: Picture Analysis

🌡️ Part 2: Gas Properties Questions

When a gas is heated, its particles move _________ and the gas _________ in volume.

When a gas is cooled, its particles move _________ and the gas _________ in volume.

🔬 Part 3: Draw and Explain

📝 Answer Key

1. They move faster and spread out more

2. Pressure increases

3. Picture B: Particles spread out, moving quickly

4. faster, expands, slower, contracts

5. As the balloon rises, air pressure decreases, so the gas inside expands and the balloon gets bigger.

6. ✓ Gases can be compressed, ✓ Gases expand to fill their container, ✓ Gases have no definite shape, ✓ Gas particles move randomly

7. Room temp: particles closer, slower movement. Heated: particles farther apart, faster movement

8. Higher temperature makes gas particles move faster and spread farther apart. Lower temperature makes particles move slower and get closer together.