Physical vs Chemical Changes (Part 3)

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

salt
sugar
vinegar
baking soda
cups

Safety First

Adult supervision recommended.

Steps

Step 1 — Read

Look at the vocabulary words and write a definition for each in your own words.

Step 2 — Do

Heat ice and record the temperature every minute as it melts and then boils. Graph the temperature changes and label each phase change.

Step 3 — Observe

Draw a detailed diagram of what you observe.

Step 4 — Record

Write a conclusion: what did your results show? Did they match your prediction?

Check Your Understanding

Question 1

1 of 3

What makes a physical change different from a chemical change?