Metals and non-metals

Question 1

Describe the solid state.

Answer 1

A solid has a fixed shape that cannot change easily except by force.

Question 2

Describe the liquid state.

Answer 2

A liquid doesn’t have a fixed shape but takes on the shape of the container. Liquids can flow.

Question 3

Describe the gaseous state.

Answer 3

A gas moves around freely and fills the space or closed container.

Question 4

What gases is air made up of?

Answer 4

Mostly nitrogen and oxygen gas.

Question 5

Define ‘matter’

Answer 5

Matter is everything that takes up space and has mass.

Question 6

Define ‘mass’

Answer 6

Mass is the amount of material in an object.

Question 7

Describe the change during melting

Answer 7

From solid to liquid.

Question 8

Describe the change during evaporation

Answer 8

From liquid to gas.

Question 9

Describe the change during condensation.

Answer 9

From gas to liquid.

Question 10

Describe the change during solidifying

Answer 10

From liquid to solid

Question 11

Define DUCTILE

Answer 11

Can be stretched into long wires

Question 12

Define STRONG

Answer 12

Can withstand a large force

Question 13

Define ELASTIC

Answer 13

Can be stretched and compressed and will return to its original shape

Question 14

Define FLEXIBLE

Answer 14

Can be bent without breaking

Question 15

Define TOUGH

Answer 15

Can change shape but doesn’t break

Question 16

Define ABSORBENT

Answer 16

Soaks up liquids

Question 17

Define an ELECTRICAL CONDUCTOR

Answer 17

A material that allows electricity to flow through it.

Question 18

Define a THERMAL CONDUCTOR

Answer 18

A material that allows heat to flow through it.

Question 19

Define MAGNETIC

Answer 19

Can be attracted by magnets

Question 20

Define TRANSPARENT

Answer 20

Can be seen through.

Question 21

Define HARD

Answer 21

Can not be scratched or marked easily.

Question 22

Define BOUYANT

Answer 22

Can float on water

Question 23

Describe the look and feel of a metal and a non-metal.

Answer 23

Metal: Shiny and hard.

Non-metal: Dull and brittle.

Question 24

Describe the weight of a metal and a non-metal.

Answer 24

Metal: Heavy.

Non-metal: Light or heavy.

Question 25

Describe the thermal and electrical conductivity of a metal and a non-metal.

Answer 25

Metal: Good conductor of heat and electricity.

Non-metal: Mostly insulators

Question 26

Define VISCOSITY.

Answer 26

The degree to which a liquid resists flowing. Syrup is very viscous.

Question 27

Give 3 examples of metals.

Answer 27

Iron, aluminium, gold, silver copper …

Question 28

Give 3 examples of non-metals

Answer 28

Plastic, wood, wool, gases …

Question 29

Explain the word DENSITY

Answer 29

Density is the mass per unit volume of a substance.

Question 30

State 4 ways to prevent metals from rusting.

Answer 30

Coat the metal in plastic
Paint the metal
Coat the metal in another metal that doesn’t rust
Coat the metal with oil or grease.