30
Lesson 30 of 84 · Matter and Reactions
ExperimentPlasma: The Fourth State
What You'll Learn
Catalysts speed up chemical reactions without being consumed. Enzymes are biological catalysts that help reactions happen in living organisms at body temperature.
Key Words
- boiling
- element
Materials Needed
- baking soda
- cups
- spoons
- food coloring
Safety First
- Wash hands after handling materials.
- Be careful with scissors — ask an adult for help if needed.
Steps
Step 1 — Read
Read and learn: Catalysts speed up chemical reactions without being consumed. Enzymes are biological catalysts that help reactions happen in living organisms at body temperature.
Step 2 — Do
Measure and record your data in a table.
Step 3 — Observe
Watch carefully for any changes and note the time.
Step 4 — Record
Create a data table to organize your measurements.
Check Your Understanding
Question 1
1 of 3What is an example of a physical change?