States Of Matter And Mixtures Flashcards Preview

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Flashcards in States Of Matter And Mixtures Deck (19):
1

What are the three states of matter

Solids, liquids, gases

2

What are the properties of solids

Strong forces of attraction between fixed particles which holds them in fixed positions
The particles don’t move
Definite shape and volume
Not much energy
They hardly move - vibrate. Hotter the solid - more vibrate

3

What are the properties of liquids

Some force of attraction - free to move past each other
Don’t keep a definite shape, take shape of container. Same volume
Particles have more energy than a solid
Particles are constantly moving with a random motion

4

What are the properties of gases

No force of attraction - free to move. Travel in straight lines
Don’t keep a definite shape or volume. Fill any container
Have more energy than a solid state and liquid state
Particles move constantly with random motion

5

What is the process when a solid turns into a liquid

Melting

6

What is the process when a liquid turns into a gas

Evaporating

7

What is the process when a liquid turns into a solid

Freezing

8

What is the process when a gas turns into a liquid

Condensing

9

What is the process when a solid turns into a gas

Subliming

10

What does pure mean

A substance is completely made up of a single element or compound

11

What is a mixture

If a substance has more than one compound present or different elements that aren’t all a single compound

12

How do you test the purity of a substance

Comparing the actual melting point to the expected value

13

What is fractional distillation

Separation of a mixture of liquids

14

What is filtration used to do

Separate an insoluble solid from a liquid

15

What does crystallisation do

Separates a soluble solid from a solution

16

What are the two phases of chromatography

Mobile phase and stationary phase

17

What is the mobile phase of chromatography

Where the molecules can move. This is always a liquid or a gas

18

What is a stationary phase of chromatography

Where the molecules can’t move. This can be a solid or a really thick liquid

19

How do you calculate the relative formula mass in chromatography

RFM = distance travelled by solute / distance travelled by solvent