Matter & Materials

Question 1

Mixtures

Answer 1

• Can be separated by mechanical means

* Consists of two or more substances

Question 2

Hermogenous Mixture

Answer 2

• Composition is constant
• Uniform Composition
• Known as solutions

Question 3

Heterogenous Mixtures

Answer 3

• Non-uniform compositions

* Do not dissolve in each other

Question 4

Pure substances

Answer 4

Consist of ONE type of element

Question 5

Matter

Answer 5

Anything that occupies a space and mass

Question 6

Substance

Answer 6

Form of matter

Question 7

Suspension

Answer 7

A heterogenous mixture of solid mixed with a liquid

Separated by filtration

Question 8

Miscible

Answer 8

Two liquids mixed completely

Question 9

Immiscible

Answer 9

Liquids that do not mix

Question 10

Emulsion

Answer 10

When two immiscible liquids are shaken

Question 11

Separating mixtures

Answer 11

Separating by physical means:

Magnetism
Filtration

Question 12

Compounds

Answer 12

A pure substance made of two or more elements bonded through chemical means

Question 13

Separating compounds

Answer 13

Chemical processes is the only way

Question 14

Types of compounds

Answer 14

Covalent

Ionic

Metallic

Question 15

Covalent

Answer 15

Non-metal & non-metal

Question 16

Ionic

Answer 16

Metal & non-metal

Question 17

Cation

Answer 17

Atom that loses an electron

Positive

Question 18

Anion

Answer 18

Atom that gains an electron

Negative

Question 19

States of matter

Answer 19

Solid
Liquid
Gas

Question 20

Solids

Answer 20

Definite shape and volume
Have mass
Take up space

Question 21

Particles in solids

Answer 21

Tightly packed
Very little energy
Vibrate in place

Question 22

Liquids

Answer 22

Take the shape of the container

Have mass

Question 23

Particles in liquids

Answer 23

Loosely packed
Medium amount of energy
Flow around each other

Question 24

Gases

Answer 24

Take up space
No definite volume
Have mass

Question 25

Particles in gases

Answer 25

Move freely | Have lots of energy

Question 26

Sublimation

Answer 26

Solid to gas

Question 27

Phase transition

Answer 27

The physical change in the phase Eg) water to ice

Question 28

Melting point

Answer 28

The point at which the solid melts into a liquid

Question 29

Boiling point

Answer 29

The point at which the liquid boils into a solid

Question 30

Kinetic Molecular Theory

Answer 30

Explains the changes of state in terms of the positions of particles

Question 31

Properties of metals

Answer 31

High BP, High MP Solid Some are magnetic

Question 32

Properties of non-metals

Answer 32

Poor conductors of heat | Low BP

Question 33

Atoms

Answer 33

Consist of protons, neutrons and electrons

Question 34

What is an atom

Answer 34

The smallest particle of an element