🎯 WALT: We Are Learning To

Identify and explain the differences between physical and chemical changes in everyday situations.

📋 Success Criteria:

✓ I can distinguish between physical and chemical changes
✓ I can provide examples of each type of change
✓ I can explain the key differences using scientific vocabulary

📚 Part 1: Multiple Choice

Choose the BEST answer for each question.

1. Which of the following is a physical change?

Burning wood

Melting ice

Rusting iron

Digesting food

2. What happens during a chemical change?

Only the shape changes

New substances are formed

The change is always reversible

No energy is involved

3. Which signs indicate a chemical change has occurred? (Select ALL that apply)

Colour change

Gas production

Change in shape

Temperature change

Formation of a precipitate

🔗 Part 2: Matching Activity

Match each example to the correct type of change by drawing a line.

Examples:

A. Cutting paper

B. Baking a cake

C. Freezing water

D. Burning petrol

E. Dissolving sugar in tea

F. Photosynthesis

Type of Change:

1. Physical Change

2. Chemical Change

3. Physical Change

4. Chemical Change

5. Physical Change

6. Chemical Change

✏️ Part 3: Short Answer Questions

4. Explain why melting chocolate is a physical change, not a chemical change.

5. Fill in the blanks:

In a __________ change, no new substances are formed and the change is usually __________. In a __________ change, new substances are formed and the change is usually __________.

6. A student heats copper carbonate and observes it turns black and produces a gas. Explain why this is a chemical change using scientific evidence.

🚀 Extension Activity (Advanced Learners)

7. Research and explain one example of a change that could be considered both physical AND chemical, depending on the conditions. Describe the different conditions and outcomes.

8. Design an experiment to test whether dissolving salt in water is a physical or chemical change. Include your method and expected results.

📖 Dyslexia-Friendly Reading Support

Key Terms with Definitions:

Physical Change: A change where no new substances are made. Usually reversible.
Chemical Change: A change where new substances are made. Usually irreversible.
Reversible: Can be changed back to the original form.
Irreversible: Cannot be changed back to the original form.

Reading tip: Take your time with each question. Highlight key words like "physical", "chemical", "new substances", and "reversible".