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Lesson 66 of 84 · Matter and Atoms
ExperimentEndothermic and Exothermic Reactions (Part 2)
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
- concentration
- plasma
- molecule
Materials Needed
- vinegar
- baking soda
- cups
- spoons
- food coloring
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 about Matter and Atoms and write down three key facts.
Step 2 — Do
Build a model of an atom using craft supplies. Show protons, neutrons, and electrons in the correct arrangement. Label each particle.
Step 3 — Observe
Use your senses (except taste) to describe what you notice.
Step 4 — Record
Write a summary of your findings in 3-5 sentences.
Check Your Understanding
Question 1
1 of 3What are the three common states of matter?