TOPIC 2

Question 1

what is a pure substance

Answer 1

a pure substance contains only one type pf particle. can exist in three states of matter solid, liquid, or gas.

Question 2

what is a mixture

Answer 2

all mixtures contain two or more pure substances. Which have their Own distinct properties.

Question 3

what is a homogenous mixture

Answer 3

appear to be one substance particles of different substances are intermingled.

Question 4

what is an example of a homogenous mixture

Answer 4

vinegar, clear air

Question 5

what is a heterogenous mixture

Answer 5

Two or more parts can be seen different kinds of particles stay together

Question 6

what is an example of a heterogenous mixture

Answer 6

soil, blood, concrete

Question 7

what is homogenous also known for

Answer 7

a solution

Question 8

what is heterogenous also known for

Answer 8

mechanical mixtures.

Question 9

what is an example of a element

Answer 9

iron, gold oxygen

Question 10

what is an example of compounds

Answer 10

water, salt, sugar

Question 11

what is suspension

Answer 11

a heterogenous mixture, in which the particles settle slowly after mixing.

Question 12

what is an example of suspension

Answer 12

orange juice.

Question 13

what is colloid

Answer 13

a heterogenous mixture in which the particles do not settle at all.

Question 14

an example of colloid would be

Answer 14

fog

Question 15

to disperse the particles for a longer period of time, and emulsifying agent (like protein) is used to form an

Answer 15

emulsion

Question 16

and example of emulsion would be

Answer 16

mayonaise

Question 17

what are mechanical mixtures

Answer 17

mixtures that are obviously two or more substances are called mechanical mixtures.

Question 18

what are the separate parts of the mechanical mixtures called

Answer 18

phases

Question 19

what makes materials dissolve

Answer 19

Forming a solution by mixing two or more materials together is called dissolving.

Question 20

how does dissolving occur

Answer 20

it occurs because of the attraction between the particles

Question 21

when dissolving occurs there may be stronger attraction to the particles of another substance, than to the particles of the same substance. true or false

Answer 21

true

Question 22

what is the solute

Answer 22

the solute is the substance that dissolves in a solvent.

Question 23

what is the solvent

Answer 23

The solvent is the substance that dissolves the solute to from a solution

Question 24

what does soluble mean

Answer 24

means to be able to be dissolved is a particlular solvent

Question 25

solutes and solvents can be

Answer 25

gases or liquids

Question 26

why is water called universal solvent

Answer 26

because it can dissolve so many materials

Question 27

how much % of the water on Earth is ocean water

Answer 27

97%

Question 28

what is agitiation

Answer 28

stirring or shaking helps the solutes to dissolve faster.

Question 29

the limit to concentration is called

Answer 29

solubility

Question 30

what is a saturated solution

Answer 30

is one in which no more solute will dissolve in a specific amount of solvent at a specific temperature

Question 31

what is a unsaturated solution

Answer 31

is one in which more solute can be dissolved in a specific solvent at the same specific temperature

Question 32

this is an example of what

Answer 32

a solubility chart

Question 33

what is a super satureated solution

Answer 33

a solution that contains more solute than normally dissolve . at a certain temperature.

Question 34

what does isoluble mean

Answer 34

not able to be dissolved in a particular solvent

Question 35

what will happen when you try to add more solute to a saturated solution. Using the particle theory matter

Answer 35

It will become a solid because the saturated solution can not contain more solute.

Question 36

certain solvents are used for special circumstances because what?

Answer 36

they will dissolve some solutes that water and other solvents cannot

Question 37

the earth is rich in?

Answer 37

Natural mixtures