Question

section 3.3 mixtures of matter
in your textbook, read about pure substances and mixtures.
use the words below to complete the concept map.
heterogeneous salt - water mixture sand - water mixture
mixtures solutions water
in your textbook, read about separating mixtures.
for each item in column a, write the letter of the matching item in column b.
column a

1. separates substances on the basis of the boiling points of the substances
2. separates by formation of solid, pure particles from a solution
3. separates substances based on their movement through a special paper
4. separates solids from liquids by using a porous barrier

column b
a. filtration
b. distillation
c. crystallization
d. chromatography

Explanation:

Matter is classified into substances and mixtures. Substances can be pure, and mixtures can be either heterogeneous or homogeneous. Homogeneous mixtures include solutions like salt - water mixture. Separation techniques are based on different physical properties: distillation uses boiling points, crystallization forms pure solid particles from a solution, chromatography separates based on movement through paper, and filtration separates solids from liquids with a porous barrier.

Answer:

1. mixtures
2. pure substances
3. heterogeneous
4. sand - water mixture
5. solutions
6. salt - water mixture
7. b. distillation
8. c. crystallization
9. d. chromatography
10. a. filtration