Chapter 4

Question 1

Element

Answer 1

A substance made up of only one type of atom

Question 2

Native element

Answer 2

An element that occurs naturally

Question 3

Compound

Answer 3

Two or more elements that are chemically joined together such as water (H2O)

Question 4

Atom

Answer 4

The basic building block of an element that cannot be broken down

Question 5

Periodic Table

Answer 5

A table of all the known elements in order of atomic number

Question 6

Period

Answer 6

A horizontal row of elements in the periodic table

Question 7

Group

Answer 7

A vertical column of elements in the periodic table

Question 8

Atomic number

Answer 8

The number of an element in the periodic table

Question 9

Atomic mass

Answer 9

The number related to the mass of one atom in an element

Question 10

Ductile

Answer 10

Able to be stretched out to a thin wire

Question 11

Malleable

Answer 11

Able to be bent without breaking

Question 12

Sonorous

Answer 12

To make a sound like a bell when hit

Question 13

Conductor

Answer 13

A material that allows heat to pass easily

Question 14

Halogen

Answer 14

A group of non-metal elements

Question 15

Salt

Answer 15

The type of chemical compound which is the product of a neutralisation reaction

Question 16

Noble gas

Answer 16

An unreactive substance in group 8 of the periodic table

Question 17

Inert

Answer 17

To be chemically unreactive

Question 18

Metalloid/semi metal

Answer 18

When an element shows the properties of metals and non metals

Question 19

Semiconductor

Answer 19

A material used in electronic circuits

Question 20

Crystalline

Answer 20

When a solvent evaporates to leave crystals of solid

Question 21

Radioactive

Answer 21

The description of a material that emits nuclear radiation

Question 22

Extraction

Answer 22

To get a metal from an ore

Question 23

Ore

Answer 23

The rock from which a metal is extracted

Question 24

Electrolysis

Answer 24

To separate using electricity

Question 25

Reduction

Answer 25

The chemical process that reduces the amount of oxygen in a compound

Question 26

Melting point

Answer 26

The temperature at which a solid changes state to a liquid

Question 27

Toxic

Answer 27

Poisonous

Question 28

Density

Answer 28

The mass of a material per unit volume