Test 2

Question 1

Particle theory

Answer 1

All matter is made up of particles
All particles of 1 substance are identical
The particles of matter are in constant motion
Temp affects the speed at which particles move
Particles have forces of attraction between them
There are spaces between particles

Question 2

Matter

Answer 2

is anything that has mass and takes up space

Question 3

Mass

Answer 3

the amount of matter in an object

Question 4

Solid

Answer 4

has a definite volume and shape, particles are tightly packed, high friction, attraction bond is high.

Question 5

Liquid

Answer 5

doesn’t have a definite shape, but a definite volume, has spaces between them, some force of attraction, little friction

Question 6

Gas

Answer 6

no definite shape or volume, particles are far apart, no friction, no attraction bond

Question 7

Compounds

Answer 7

substances made from 2 or more different elements that have been chemically joined. Ex - H2O, table salt (NaCl)

Question 8

Element

Answer 8

a basic part of a whole, made up of 1 type of atom, can’t be broken down. Ex - Oxygen

Question 9

Pure Substance

Answer 9

matter that has uniform properties and is 1 type of substance throughout.
Ex - Sugar

Question 10

Mixtures

Answer 10

combination of 2 or more different substances, which are not chemically combined and may be separated again. Ex - Milk

Question 11

In an atom, there are

Answer 11

protons, neutrons, and electrons

Question 12

Homogeneous

Answer 12

to describe a substance that appears uniform throughout. Ex - water. Also known as a solution.

Question 13

Solute

Answer 13

The one being dissolved (coco powder)

Question 14

Solvent

Answer 14

The one doing the dissolving. (Milk)

Question 15

Heterogeneous

Answer 15

to describe a substance that appears uniform throughout, 2 or more substances, and you can see them. Ex - pizza. Also known as a mechanical mixture.

Question 16

Analyzing different situations using particle theory.
When you were stirring the drink in the lab, the sugar disappeared after some time. Use 2 parts of the theory to explain.

Answer 16

When you were stirring the drink in the lab, the sugar disappeared after some time. Use 2 parts of the theory to explain.
There are spaces between the particles
A- There is space in the water particles, and the sugar is able to go in the space between the particles.

Question 17

Periodic table first 20

Answer 17

Hydrogen (H), Helium (He), Lithium (Li), Beryllium (Be), Boron (B), Carbon (C), Nitrogen (N), Oxygen (O), Fluorine (F), Neon (Ne), Sodium (Na), Magnesium (Mg), Aluminum (Al), Silicon (Si), Phosphorus (P), Sulfur (S), Chlorine (Cl), Argon (Ar), Potassium (K), and Calcium (Ca).

Question 18

Counting atoms
3AL2(CO)3

Answer 18

3AL2(CO)3
Aluminum - AL - 6
Carbon - C - 9
Oxygen - O - 9
24

Question 19

Identify Mixtures (heter)
Solid + Solid
Solid + liquid

Answer 19

hetegrogenous mixture with
Solid + Solid (Burger)
Solid + liquid (poutine or lemonade w pulp)

Question 20

Solid + Solid (homo)
Liquid + liquid
Liquid + gas

Answer 20

(Paper clips same colour)
(Juice + FLAT pop)
(Pop)

Question 21

Distillation

Answer 21

Heating a liquid to turn it into a vapor and then cooling it back into a liquid to separate different parts.

Question 22

Evaporation

Answer 22

Heating a liquid so it turns into vapor, leaving behind any solid stuff that was mixed with it.

Question 23

Paper Chromatography

Answer 23

Using a piece of paper to separate colors or parts of a mixture by making them move at different speeds.

Question 24

Filtration

Answer 24

Using a filter (like a net) to separate solid things from liquid or gas.

Question 25

Sorting

Answer 25

Picking or separating things based on how they look, like size or color.

Question 26

Sifting

Answer 26

Using a mesh or screen to separate smaller particles from bigger ones, like flour from lumps.

Question 27

Magnetism

Answer 27

Using a magnet to separate magnetic things (like iron) from non-magnetic things.