29

Lesson 29 of 84 ยท Chemical Reactions

Simulation

Mass and Volume

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

Steps

Step 1 โ€” Read

Review the background information on Chemical Reactions before starting.

Step 2 โ€” 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 โ€” Observe

Observe what happens and describe it in detail.

Step 4 โ€” Record

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

Check Your Understanding

Question 1

1 of 3

What holds atoms together in a molecule?

Mass and Volume โ€” Chemical Reactions | 7th Grade Science | LittleActivity | LittleActivity