Dissolving: Making Solutions (Part 2)

What You'll Learn

Endothermic reactions absorb heat from surroundings, making things feel cold. Exothermic reactions release heat, like combustion. Both types of reactions are essential in nature.

Key Words

pH
acid
base

Materials Needed

vinegar
baking soda
cups
spoons
food coloring

Safety First

Use materials only as directed in the experiment.

Steps

Step 1 — Read

Study the diagram and label the parts you recognize.

Step 2 — Do

Build a model of an atom using craft supplies. Show protons, neutrons, and electrons in the correct arrangement. Label each particle.

Step 3 — Observe

Observe what happens and describe it in detail.

Step 4 — Record

Record your observations in your science journal with measurements and descriptions.

Check Your Understanding

Question 1

1 of 3

What is a solvent?