B. Read each scenario. Decide whether the physical change or chemical change has occurred and give evidence for your decision.

1. Brixtan decides to toast a piece of bread but leaves it in the toaster for long. The bread turned to black, and the kitchen was filled with smoke.
Type of change:
Evidence:
2. Raven forgot to dry the bread knife after used. When she washed it the reddish-brown color spots appeared.
Type of change:
Evidence:
3. A straight piece of wire is coiled to form a string.
Type of change:
Evidence:
4. You blow dry your wet hair.
Type of change:
Evidence:
5. Baked goods like bread dough rise due to carbon dioxide bubbles formed
Type of change:
Evidence: