🔬 Part 1: Multiple Choice - Characteristics of Matter

1. Which characteristic best describes particles in a solid?

Particles are far apart and move rapidly

Particles are close together and vibrate in fixed positions

Particles flow freely and take the shape of their container

Particles have no definite arrangement

2. A liquid has which of the following properties?

Definite shape and definite volume

No definite shape but definite volume

Definite shape but no definite volume

No definite shape and no definite volume

3. What happens to particle movement when a substance is heated?

Particles move slower and get closer together

Particles move faster and spread farther apart

Particle movement stays the same

Particles stop moving completely

4. Which phase of matter is most compressible?

Solid

Liquid

Gas

All phases are equally compressible

🎯 Part 2: Diagram and Short Answers

5. In the box below, draw and label the particle arrangement for each phase of matter. Show how particles are spaced and organized in solids, liquids, and gases.

6. Explain what happens to particles during the process of melting. Include information about particle movement and energy.

7. Why does a gas expand to fill its entire container, but a liquid only takes the shape of the bottom portion?

8. Complete the following phase change terms:

Solid to liquid: _______________

Liquid to gas: _______________

Gas to liquid: _______________

Solid directly to gas: _______________

🌍 Part 3: Real-World Applications

9. Match each real-world example to its phase of matter by writing the letter in the blank:

_____ Steam from a hot shower

_____ Ice cubes in a freezer

_____ Milk poured into a glass

_____ Air inside a balloon

_____ Dry ice sublimating

A. Solid

B. Liquid

C. Gas

D. Solid to Gas

E. Liquid to Gas

10. You observe water droplets forming on the outside of a cold glass on a hot day. Explain this phenomenon using your knowledge of phases of matter and particle behavior.

11. Reflection: Describe one new thing you learned about phases of matter today and explain how it connects to something you observe in your daily life.