Changes in Matter

Name:

Date:

📚 Part 1: States of Matter

1. Which state of matter has a definite shape and volume?

Solid

Liquid

Gas

2. Fill in the blanks using the words: solid, liquid, gas

Ice is a ____________. Water is a ____________. Steam is a ____________.

3. Check all properties that describe a liquid:

Takes the shape of its container

Has a definite volume

Has a definite shape

Can be compressed easily

4. Complete this "I can" statement:

I can describe the three states of matter by explaining that solids have ____________ shape and volume, liquids have definite ____________ but take the shape of their ____________, and gases have neither definite ____________ nor ____________.

🔬 Part 2: Physical vs Chemical Changes

5. Circle whether each change is PHYSICAL or CHEMICAL:

a) Ice melting into water: PHYSICAL / CHEMICAL

b) Mixing vinegar and baking soda: PHYSICAL / CHEMICAL

c) Tearing paper into pieces: PHYSICAL / CHEMICAL

d) Burning wood: PHYSICAL / CHEMICAL

6. What evidence tells you that mixing vinegar and baking soda is a chemical change?

7. Complete this sentence: A physical change happens when matter changes its ____________ or ____________ but stays the same substance. A chemical change creates a ____________ ____________.

8. Write your own "I can" statement about the difference between physical and chemical changes:

❄️ Part 3: Investigation & Application

9. In our salt and ice experiment, what type of change occurred when the ice melted?

Physical change - the ice became water but was still the same substance

Chemical change - the ice became a completely new substance

No change occurred

10. Explain why adding salt to roads in winter is helpful. Use scientific vocabulary in your answer:

11. Extension Challenge: Describe one physical change and one chemical change you might observe while cooking dinner. Explain what evidence supports each classification: