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Gas Properties Picture Worksheet

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Gas Properties Picture Worksheet

🎈 Part 1: Picture Analysis

1. Look at the picture below showing gas particles in a container. What happens to the gas particles when the container is heated?

They move faster and spread out more

They move slower and get closer together

They stop moving completely

Nothing happens to them

2. The picture shows a balloon being squeezed. What happens to the gas pressure inside?

Pressure decreases

Pressure increases

Pressure stays the same

The balloon pops immediately

3. Which picture shows gas particles at a higher temperature?

Picture A: Particles close together, moving slowly

Picture B: Particles spread out, moving quickly

Both pictures show the same temperature

🌡️ Part 2: Gas Properties Questions

4. Fill in the blanks using the picture clues:

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.

5. Look at the weather balloon picture. Explain why the balloon gets bigger as it rises higher in the atmosphere:
6. Check all the properties of gases shown in the pictures:

Gases can be compressed

Gases expand to fill their container

Gas particles are always touching

Gases have no definite shape

Gas particles move randomly

🔬 Part 3: Draw and Explain

7. Draw gas particles in a container at room temperature (70°F), then draw the same gas heated to 200°F:
8. Explain in 2-3 sentences what your drawings show about how temperature affects gas particles:

📝 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.

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