42
Lesson 42 of 84 · Matter
ExperimentFreezing and Melting (Part 2)
What You'll Learn
Some changes can be reversed (melting ice) and some cannot (baking a cake).
Key Words
- cool
- mixture
- material
Materials Needed
- strainer
- ice cubes
- salt
- sugar
Safety First
- Do not mix unknown chemicals together.
Steps
Step 1 — Read
Read and learn: Some changes can be reversed (melting ice) and some cannot (baking a cake).
Step 2 — Do
Measure using your ruler or measuring cup.
Step 3 — Observe
Use your senses to describe what you notice.
Step 4 — Record
Write 1-2 sentences about what happened.
Check Your Understanding
Question 1
1 of 3What happens when you mix baking soda and vinegar?