unit 1

Question 1

What does whmis stand for

Answer 1

workplace, hazardous, material, information, system

Question 2

What is supersaturated

Answer 2

It is when there is more solute in a solvent than normal

Question 3

What do they Mena when something is saturated

Answer 3

It means that the solvent cannot take anymore solute at that temperature

Question 4

Define matter

Answer 4

A physical substance that has mass and occupies space

Question 5

What is the shape and volume of a solid

Answer 5

Shape is definite and volume is definite

Question 6

What is the particle arrangement of a solid and the particle movement

Answer 6

Arrangement is closely packed in a pattern movement is vibrate in definite positions

Question 7

What is the shape and volume of a liquid

Answer 7

Shape is the shape of its container and volume is definite

Question 8

What Is the particle arrangement and movement of a liquid

Answer 8

Close together with random arrangements. Move independently and slide past each other

Question 9

What is the shape and volume of a gas

Answer 9

Shape of container and indefinite

Question 10

What is the particle arrangement and movement of a gas

Answer 10

Arrangement is huge spaces random arrangement. Fast and lots of collisions

Question 11

What are the 5 key principles of the particle model of matter

Answer 11

1. All substances are made up of tiny particles. 2. All particles of a pure substance are the same. 3. Particles have space between them. 4. All particles are moving. 5. Particles are attracted to each other.

Question 12

What is solid to gas

Answer 12

Sublimation

Question 13

Gas to solid

Answer 13

Deposition

Question 14

Gas to liquid

Answer 14

Condensation

Question 15

Liquid to gas

Answer 15

Evaporation

Question 16

Solid to liquid

Answer 16

Melting

Question 17

Liquid to solid

Answer 17

Freezing

Question 18

Define pure substance

Answer 18

Contains only one type of particle all 3 states of matter

Question 19

Define mixtures

Answer 19

Contains 2 or more pure substances not an element

Question 20

2 types of mixtures

Answer 20

Heterogeneous and homogeneous

Question 21

3 types of heterogeneous

Answer 21

Colloid, suspension, mechanical mixtures

Question 22

What I’d homogenous

Answer 22

It is when the solute is completely dissolved in the solvent or a solution

Question 23

What is heterogeneous

Answer 23

Where the solute cant dissolved in the solvent

Question 24

Define colloid

Answer 24

A heterogeneous mixture is where the solute hasn’t fully settled in a solvent eg fog and they can’t be separated

Question 25

What is suspension

Answer 25

Where the solute cannot get close to the solvent eg oil and water

Question 26

Ehat is mechanical mixture

Answer 26

Where you can see physical stuff in the solvent

Question 27

How do you make something supersaturatwd

Answer 27

You make it saturated them heat up the mixture then add more solute then cool it down and voila supersaturated

Question 28

What I’d concentration

Answer 28

The amount of solute there is in the solvent

Question 29

Solubility

Answer 29

How easily something dissolves

Question 30

What factors affect solubility

Answer 30

Temperature, pressure, agitation, surface area

Question 31

What is flame over circle used for

Answer 31

Oxidizing hazards