Speeratuon And Materials

Question 1

What are six physical properties that can help to separate substances in a mixture?

Answer 1

1 particle size
2 state of matter
3 boiling point
4 density
5 magnetism
6 solubility

Question 2

Name seven methods of separation

Answer 2

1 manually sorting and sieving
2 decanting
3 filtration
4 evaporation
5 distillation
6 chromatography
7 magnetism

Question 3

What is dissolving?

Answer 3

Dissolving is when molecules break down into smaller molecules when they come in contact with a liquid

Question 4

In what situation would you usually use decanting?

Answer 4

When you have a liquid and an insoluble solid

Question 5

What is residue?

Answer 5

Residue is the name given to the substance left in the filter paper after filtration has occurred, it’s usually an insoluble solid

Question 6

What is filtrate?

Answer 6

Filtrate is the name given to the substance that flows through the filter paper and into the conical flask underneath, it is usually a liquid

Question 7

What is distillation?

Answer 7

This is a separation technique that separates substances based on the fact all substances have different boiling points

Question 8

What is a tool used in distillation?

Answer 8

A Liebig condenser

Question 9

What is miscibility?

Answer 9

This is how well substances mixed together

Question 10

What is chromatography?

Answer 10

This is a separation technique that is used to separate miscible liquids from each other

Question 12

What is paper chromatography?

Answer 12

This is a technique that uses paper to help separate miscible liquids from each other

Question 13

What are materials?

Answer 13

These are chemical substances that make up matter

Question 14

What is a state?

Answer 14

State refers to how much energy the particles of a substance have

Question 15

Describe a solid

Answer 15

They have a fixed volume in shape are not easily compressed and they vibrate slowly.

Question 16

Describe a liquid

Answer 16

They have a fixed volume, take the shape of the container that contains them, are more spread out than a solid, and have more energy than a solid

Question 17

Describe a gas

Answer 17

Gases have a lot of energy and move fast. They do not have a fixed volume and they are easily compressed.

Question 18

What is diffusion?

Answer 18

Diffusion is the spread out of a liquid or gas to fill a space

Question 19

What is a highly concentrated area?

Answer 19

An area that has a large amount of a certain type of particle

Question 20

What is an area with low concentration?

Answer 20

This is an area that has a small amount of a certain type of particle

Question 21

What are metals?

Answer 21

Substances that are good conductors of heat and electricity with a high melting point.

Question 22

Which side of the periodic table are metal on?

Answer 22

The left

Question 23

What is a non-metal?

Answer 23

A substance that is a poor conductor of heat and electric electricity with a low melting point

Question 24

Which side of the periodic table are nonmetals found on?

Answer 24

The right

Question 25

What are five properties of metals?

Answer 25

1 good conductor of heat 2 good conductor of electricity 3 shiny 4 malleable and ductile 5 high density

Question 26

What are five properties of a non-metal?

Answer 26

1 poor conductor of heat 2 poor conductor of electricity 3 dull 4 brittle 5 low density

Question 27

What does ductile mean?

Answer 27

That something can be drawn out into a wire

Question 28

What does malleability mean?

Answer 28

It can be hammered and moulded into a sheet

Question 29

What is brittleness?

Answer 29

It can break or snap when a lot of pressure is put onto it