64
Lesson 64 of 84 · Chemical Reactions
ExperimentMass and Volume (Part 2)
What You'll Learn
Distillation separates mixtures based on different boiling points. Heating salt water causes water to evaporate and condense, leaving salt behind and producing fresh water.
Key Words
- solubility
- concentration
- plasma
Materials Needed
- paper towels
- thermometer
- strainer
- ice cubes
Safety First
- Work in a well-ventilated area when using vinegar or other strong-smelling substances.
- Dispose of materials properly after the experiment.
- Handle glass items carefully to avoid breakage.
Steps
Step 1 — Read
Review the background information on Chemical Reactions before starting.
Step 2 — Do
Test 5 household liquids (vinegar, milk, lemon juice, baking soda water, soap) with pH paper. Classify each as acid, base, or neutral.
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 3What holds atoms together in a molecule?