31
Lesson 31 of 84 · Matter and Reactions
LessonEndothermic and Exothermic 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
- element
- mixture
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
Repeat the experiment two more times for accuracy.
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?