Unit 4 - Elements, compounds & reactions

Question 1

A substance made up of only one type of atom

Answer 1

Element

Question 2

An element that occurs naturally

Answer 2

Native element

Question 3

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

Answer 3

Compound

Question 4

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

Answer 4

Atom

Question 5

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

Answer 5

Periodic Table

Question 6

A horizontal row of elements in the Periodic Table

Answer 6

Period

Question 7

A vertical column of elements in the Periodic Table

Answer 7

Group

Question 8

The number of an element in the Periodic Table

Answer 8

Atomic number

Question 9

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

Answer 9

Atomic mass

Question 10

Able to be stretched out to a thin wire

Answer 10

Ductile

Question 11

Able to be bent without breaking

Answer 11

Malleable

Question 12

To make a sound like a bell when hit

Answer 12

Sonorous

Question 13

A material that allows heat to pass easily

Answer 13

Conductor

Question 14

A group of non-metal elements

Answer 14

Halogen

Question 15

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

Answer 15

Salt

Question 16

An unreactive substance in group 8 of the Periodic Table

Answer 16

Noble gas

Question 17

To be chemically unreactive

Answer 17

Inert

Question 18

When an element shows the properties of metals and non-metals

Answer 18

Metalloid / semi-metal

Question 19

A material used in electronic circuits

Answer 19

Semiconductor

Question 20

When a solvent evaporates to leave crystals of solid

Answer 20

Crystalline

Question 21

The description of a material that emits nuclear radiation

Answer 21

Radioactive

Question 22

To get a metal from an ore

Answer 22

Extraction

Question 23

The rock from which a metal is extracted

Answer 23

Ore

Question 24

To separate using electricity

Answer 24

Electrolysis

Question 25

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

Answer 25

Reduction

Question 26

The temperature at which a solid changes state to a liquid

Answer 26

Melting point

Question 27

Poisonous

Answer 27

Toxic

Question 28

The mass of a material per unit volume

Answer 28

Density