chemistry topic 4

Question 1

Solution

Answer 1

A mixture of one or more solutes dissolved in a solvent

Question 2

Saturated Solution

Answer 2

A Solution containing the maximum concentration of a solute dissolved in a solvent at a specific temperature.

Question 3

Aqueous

Answer 3

A solution where the solvent is water.

Question 4

solute

Answer 4

A substance that is a substance that is dissolved in a solvent

Question 5

Solvent

Answer 5

A substance dissolves a solute

Question 6

Suspension

Answer 6

A cloudy mixture of an insoluble solid and liquid.

Question 7

Soluble

Answer 7

A substance that can dissolve in a solvent.

Question 8

Insoluble

Answer 8

A substance that cannot dissolve in a solvent.

Question 9

solubility

Answer 9

How much solid (in grams) can dissolve in 100cm3 water.

Question 10

Pure Substance

Answer 10

A pure substance contains only one chemical. it has its own physical properties as well as melting and boiling points.

Question 11

Impure substance

Answer 11

when a pure substance is mixed with another chemical, without reacting it becomes an impure substance.

Question 12

Dissolving

Answer 12

This is a physical change it happens when a solute dissolves

Question 13

Air

Answer 13

Air is a layer of gas around the earth, it is about 700km thick.

Question 14

1. Nitrogen
2. Oxygen
3. Aragon
4. Carbon dioxide
5. Helium
6. Water vapor

Answer 14

1) 78%
2) 21%
3) almost 1%
4) 0.03%
5) Trace amounts
6) Varibel up to 4 %