C3

Question 1

Structure of ionic compounds

Answer 1

a regular arrangement of alternating positive
and negative ions

Question 2

Electrical conductivity of the two

Answer 2

Ionic compounds - conduct electricity when melted. covalent compounds - poor conductor in all states

Question 3

Solubility

Answer 3

Ionic Compounds - soluble in water but not nonpolar liquid. Covalent compounds - Many soluble in nonpolar liquids but not in water.

Question 4

MP and BP

Answer 4

Ionic compounds - High MP and BP. Covalent compounds - Low MP and BP.

Question 5

Physical Change

Answer 5

are generally reversible and no new product is formed

Question 6

Chemical Change

Answer 6

are generally permanent and a new product if formed

Question 7

Element

Answer 7

consists of atoms of the same kind

Question 8

Compound

Answer 8

consists of different elements chemically combined

Question 9

Mixture

Answer 9

Consists of two or more substances which have been combined such that each substance retains it’s own chemical identity

Question 10

Solvent

Answer 10

Substance that dissolves a solute

Question 11

Solute

Answer 11

Substance that dissolves in a solvent

Question 12

Solution

Answer 12

Mixture formed by a solvent and a solute

Question 13

Saturated Solution

Answer 13

Solution where no more solute can dissolve(anymore solute that is added will settle at the bottom.)

Question 14

Concentration

Answer 14

A measure of how ‘crowded’ the solute particles are. The more concentrated the solution, the more particles it contains in a given volume.