Acids and Bases (Part 3)

What You'll Learn

Acids have a pH below 7 and taste sour, while bases have a pH above 7 and feel slippery. A pH of 7 is neutral, like pure water.

Key Words

solution
evaporation

Materials Needed

salt
sugar
vinegar
baking soda

Safety First

Wear safety goggles when mixing liquids.

Steps

Step 1 — Read

Read about Properties of Matter and write down three key facts.

Step 2 — Do

Create a density column: carefully layer honey, dish soap, water, vegetable oil, and rubbing alcohol in a tall glass. Drop small objects in to test where they float.

Step 3 — Observe

Look for patterns in your observations.

Step 4 — Record

Make a graph or chart showing your results.

Check Your Understanding

Question 1

1 of 3

What happens to water when it freezes?