Changing States: Evaporation (Part 2)

What You'll Learn

Evaporation happens when liquid particles at the surface gain enough energy to escape into the air as gas. Condensation is the reverse—gas particles slow down and form liquid.

Key Words

element
compound
mixture

Materials Needed

vinegar
baking soda
cups

Safety First

Adult supervision recommended.
Do not taste any materials.

Steps

Step 1 — Read

Read and learn: Evaporation happens when liquid particles at the surface gain enough energy to escape into the air as gas. Condensation is the reverse—gas particles slow down and form liquid.

Step 2 — Do

Create a labeled diagram of what you built or observed.

Step 3 — Observe

Draw a picture of what you observe.

Step 4 — Record

Answer the questions based on your data.

Check Your Understanding

Question 1

1 of 3

What happens during evaporation?