Chem 2.0

Question 1

Solvent

Answer 1

Substance that is dissolving

Question 2

Solution

Answer 2

Solute dissolves in solvent

Question 3

Homogenous mixture

Answer 3

Uniform in composition throughout

Question 4

What is homogenous sugar solution

Answer 4

Sugar molecules are spread evenly through the water

Question 5

How can you tell that sugar in a tea is homogenous mixture

Answer 5

Sweetness is the same anywhere in solution

Question 6

What happens to the sugar particles in a homogenous mixture

Answer 6

The sugar particles and water particles are moving and become evenly distributed making the mixture homogenous.

Question 7

Why don’t some jobs dissolve in water

Answer 7

The attractions between the ions in the crystal are strong

Question 8

Unsaturated

Answer 8

More solute could be dissolved I the solution

Question 9

Saturated

Answer 9

No more solute can be dissolved in the solution

Question 10

Dilute

Answer 10

Small amount of solute

Question 11

Concentrated

Answer 11

Large proportion of solute

Question 12

Explain in terms of kinetic theory what takes place when the sugar is stirred into the tea

Answer 12

Liquid, particles are close together and are moving
Water molecules surround the sugar molecules and the water molecules attract the sugar and pull them away from each other
Sugar molecules spread evenly throughout the solution

Question 13

Concentration formula

Answer 13

Mass. Of solute / volume of solution

Question 14

Uni of concentration

Answer 14

gL-1

Question 15

When does a ionic substance dissolve

Answer 15

If the water particles are strong enough to overcome the strong forces of attraction between the opposite charged ions

Question 16

Precipitate

Answer 16

Insoluble salt

Question 17

Catalyst

Answer 17

Reducing the actiavtion energy that particles need when they collide to allow them to react

Question 18

Solute

Answer 18

Substance that dissolves