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Lesson 34 of 84 · Chemical Reactions
ExperimentCatalysts: Speeding Up Reactions
What You'll Learn
Matter exists in three common states: solid, liquid, and gas. Solids have a fixed shape and volume, liquids have a fixed volume but take the shape of their container, and gases fill any container.
Key Words
- plasma
- molecule
Materials Needed
- balloons
- measuring cups
- paper towels
- thermometer
- strainer
- ice cubes
Safety First
- Keep small objects away from young children.
- Work in a well-ventilated area when using vinegar or other strong-smelling substances.
- Dispose of materials properly after the experiment.
Steps
Step 1 — Read
Read and learn: Matter exists in three common states: solid, liquid, and gas. Solids have a fixed shape and volume, liquids have a fixed volume but take the shape of their container, and gases fill any container.
Step 2 — Do
Follow the procedure carefully, step by step.
Step 3 — Observe
Compare the before and after states.
Step 4 — Record
Write your conclusion: did the results match your hypothesis?
Check Your Understanding
Question 1
1 of 3Which is an example of a chemical change?