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Question 1

Mixture

Answer 1

Is made up of substances that are not chemically joined together.

Question 2

Whats inside a mixture?

Answer 2

In a mixture the substances keep their own properties. You can change the amounts of the substances.

Question 3

Pure substances

Answer 3

A pure substance has a sharp melting point. An impure substance does not.

Question 4

Solutions

Answer 4

A solution is a mixture of liquid with a solid or gas . All parts of the solution are the same. You cannot see the separate substances.

Question 5

In a solution….

Answer 5

The substance that dissolves is called a solute

Question 6

In a solution…..

Answer 6

The liquid in which the solute dissolves is called a solvent. Solvents include water, propanone and ethanol.

Question 7

When a substance dissolves….

Answer 7

Solvent particles surround the solute particles.

Question 8

What is a saturated solution?

Answer 8

Is a solution in which no more solute can dissolve.

Question 9

Solubility of a substance

Answer 9

It is the mass that dissolves in 100g of water. Every substance has its own solubility.

Question 10

Solubility

Answer 10

The solubility of a substance varies with temperature.

Question 11

Insolubility

Answer 11

Substances that cannot dissolve in a certain solvent are insoluble in that solvent