Rivision

Question 1

Element

Answer 1

Made up of only 1 type of atom

Question 2

Compound

Answer 2

Made up of 2 or more types of atoms chemically joined

Question 3

Mixture

Answer 3

Made up of 2 or more types of atoms not chemically joined together

Question 4

Pure

Answer 4

Not mixed with ant other substances or metal

Question 5

Metals

Answer 5

a solid material which is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivity (e.g. iron, gold, silver, and aluminium, and alloys such as steel).

Question 6

Non metal

Answer 6

an element or substance that is not a metal.

Question 7

Ductile

Answer 7

able to be deformed without losing toughness; pliable, not brittle.

Question 8

Malleable

Answer 8

Able to be hammered or pressed into shape without breaking or cracking

Question 9

Conducts

Answer 9

the transfer of energy from one atom to another through direct contact.

Question 10

Reactivity

Answer 10

the ability of a substance to interact chemically with a second substance.

Question 11

Corrosion

Answer 11

a natural process in which a refined metal is converted to a more chemically stable form, such as oxide, hydroxide, or sulphide.

Question 12

Displacement

Answer 12

occurs when a more reactive element displaces, or pushes out, a less reactive element from a compound that contains the less reactive element.

Question 13

Combustion

Answer 13

another name for burning.

Question 14

Thermal decomposition

Answer 14

a chemical reaction. that happens when a compound breaks down when heated.

Question 15

Exothermic

Answer 15

chemical reactions. which release energy from the chemicals into the surroundings.

Question 16

Endothermic

Answer 16

Chemical reactions that absorb (or use) energy