Physical vs Chemical Changes (Part 2)

What You'll Learn

Chemical changes produce new substances with different properties. Signs of a chemical change include color change, gas production, temperature change, and formation of a precipitate.

Key Words

evaporation
condensation
boiling

Materials Needed

paper towels
thermometer
strainer
ice cubes
salt

Safety First

Wear safety goggles when mixing liquids.
Wash hands after handling materials.
Be careful with scissors — ask an adult for help if needed.

Steps

Step 1 — Read

Read and learn: Chemical changes produce new substances with different properties. Signs of a chemical change include color change, gas production, temperature change, and formation of a precipitate.

Step 2 — Do

Conduct the experiment by following the instructions.

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 makes a physical change different from a chemical change?