Topic 2- Mixing and dissolving

Question 1

Homogeneous mixture

Answer 1

This is a mixture in which substances appear as one when mixed. A mixtures that look as if they only have one set of properties, they are blended together to make sure that every sample of the mixture will contain equal amounts. eg. salt in water

Question 2

Heterogenous mixture in which no settling occurs.

Answer 2

When no settling occurs it is called a colloid

Question 3

heterogenous mixture

Answer 3

A heterogenous mixture is a mixture in which two or more particles can be seen when mixed meaning they do not dissolve when mixed. eg. salad dressing.

Question 4

emulsion

Answer 4

when particles in a colloid are dispearced for an even longer period by adding an emulsifying agent to form an emulsion

Question 5

the separate parts of a mechanical mixture

Answer 5

This is called fases

Question 6

what two things make materials dissolve.

Answer 6

1. particles have to be attracted to each other.

2. particles have to be moving.

Question 7

solvent vs solute

Answer 7

A solvent does the dissolving and a solute gets dissolved. eg. water would be the solvent and salt would be the solute because the salt gets dissolved in the water.

Question 8

what is it called when a solute can be dissolved in a solvent.

Answer 8

It is called soluble

Question 9

what is it called when a solute can not be dissolved in a solvent.

Answer 9

It is called insoluble.

Question 10

what four things effect the rate of dissolving.

Answer 10

1. agitation (stirring or shaking)
2. surface area
3. temperature
4. pressure

Question 11

saturated
unsaturated
supersaturated

Answer 11

saturated is the max amount of solute that will dissolve in a solvent
unsaturated is when more solute can fit in a solvent and it will continue to dissolve.
supersaturated is to go beyond the saturation point.

Question 12

Classification of matter chart

Answer 12

review on pg 9 of notebook.

Question 13

heterogenous mixture in which particles settle slowly after being mixed

Answer 13

this is called a suspension

Question 14

Mechanical mixture

Answer 14

heterogenous mixture consisting of two or more pure substances in which the different substances are easy to see.

Question 15

element

Answer 15

pure substance such as gold iron or silver

Question 16

compound

Answer 16

A pure substance made up of two or more types of elements {water, table salt, sugar}

Question 17

solution, aqueous vs non aqueous

Answer 17

A homogeneous mixture of two or more pure substances appearing as one {vinegar, clear air}

Aqueous solution ~ a solution with water as the solvent eg} tea

Non-aqueous solution ~ a solution that does not contain water eg} nail polish remover

Question 18

mechanical mixture

Answer 18

another word for a heterogenous mixture

Question 19

dissolving

Answer 19

breaking up; forming a solution by mixing two or more materials together

Question 20

soluble vs insoluble

Answer 20

soluble- able to dissolve in a certain substance

insoluble- unable to dissolve in a certain substance

Question 21

rate of dissolving

Answer 21

how fast a solute dissolves in a solvent