Key Words

Question 1

State of matter

Answer 1

Solid liquid or gas

Question 2

Diffusion

Answer 2

Movement of particles from a region of high concentration to a region of low concentration

Question 3

Group

Answer 3

A vertical column of elements with similar properties in the periodic table. Eg grp 1 is the alkali metals

Question 4

Period

Answer 4

Horizontal row in the periodic table

Question 5

Particle theory

Answer 5

Theory that describes the arrangement and movement of particles in solids, liquids and gases

Question 6

Atom

Answer 6

Smallest particle of matter

Question 7

Element

Answer 7

Substance that contains only one type of atom

Question 8

Compound

Answer 8

A substance that contains more than 1 type of atom chemically joined together

Question 9

Mixture

Answer 9

A substance that is made from more than 1 element or compound.THEY ARE NOT JOINED TOGETHER.

Question 10

Thermal decomposition

Answer 10

The breaking down of a substance into simpler substances or elements using heat

Question 11

Electrolysis

Answer 11

Is the breaking down of a substance into its elements using electricity

Question 12

Ion

Answer 12

Something with a positive or negative charge

Question 13

Anode

Answer 13

Positive electrode

Question 14

Cathode

Answer 14

Negative electrode

Question 15

Electrolyte

Answer 15

The solution containing ions to be electrolysed