S1 - Model of Matter (complete)

Question 1

Matter

Answer 1

Stuff everything is made of.

Question 2

Particle

Answer 2

A very small piece of matter.

Question 3

Solid

Answer 3

A state of matter with tightly packed particles.

Question 4

Liquid

Answer 4

A state of matter with particles that can slide over each other.

Question 5

Gas

Answer 5

A state of matter with widely spaced, fast moving particles.

Question 6

Solid, liquid or gas?

Answer 6

Liquid

Question 7

Solid, liquid or gas?

Answer 7

Gas

Question 8

Solid, liquid or gas?

Answer 8

Solid

Question 9

Which will take the shape of the container they are in:

solid, liquid, gas?

Answer 9

Liquid and gas

Question 10

Which can be compressed:

solid, liquid, gas?

Answer 10

Gas

Question 11

Are particles in solids completely still?

Answer 11

No, they vibrate.

Question 12

How can we show these particles are vibrating?

Answer 12

Add curved lines

Question 13

Why are gases easy to compress?

Answer 13

Large spaces between particles (so we can push them closer).

Question 14

What happens to solids when you heat them?

Answer 14

They expand (get bigger).

Question 15

A metal bar gets longer after heating. Why?

Answer 15

Particles vibrate more, so spaces between particles get bigger.

Question 16

Fill in the blank in the diagram

Answer 16

Question 17

Fill in the blank in the diagram

Answer 17

Question 18

Fill in the blank in the diagram

Answer 18

Question 19

Fill in the blank in the diagram

Answer 19

Question 20

Melting

Answer 20

Solid turning into a liquid.

Question 21

Boiling

Answer 21

Liquid turning into a gas.

Question 22

Freezing

Answer 22

Liquid turning into a solid.

Question 23

Condensing

Answer 23

Gas turning into a liquid.

Question 24

Melting point

Answer 24

Temperature at which a solid turns into a liquid.

(0 ºC for water.)

Question 25

Boiling point

Answer 25

**Temperature** at which a **liquid** turns into a **gas**. (100 ºC for water.)

Question 26

Density

Answer 26

This describes how **tightly** particles are **packed**.

Question 27

The formula to calculate **density** is ...

Answer 27

Density = Mass ÷ Volume

Question 28

Units for density

Answer 28

**g/cm³** | (grams per cubic centimetre)

Question 29

How can you tell if something will **float** in a liquid?

Answer 29

If **density** is **lower** than the **liquid**, it will float.

Question 30

What is this process called?

Answer 30

Diffusion

Question 31

Diffusion

Answer 31

Particles **spreading out** to mix with air or water.

Question 32

Concentration

Answer 32

This describes **how many particles** are **dissolved** in a liquid.

Question 33

Soluble

Answer 33

Something that **dissolves**. | (E.g. sugar is soluble in water.)

Question 34

Insoluble

Answer 34

Something that **does not dissolve**. | (E.g. oil is insoluble in water.)

Question 35

Solvent

Answer 35

A **liquid** that something can be **dissolved** in. (Like water.)

Question 36

Solute

Answer 36

The **substance** that is **dissolved** in a solvent. (Sounds similar to 'solid'.)

Question 37

Solution

Answer 37

A **solute** dissolved in a **solvent**.

Question 38

Saturated

Answer 38

A solution in which **no more** substance can be **dissolved**.