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0
Q

What is the name for solids that do not dissolve

A

Insoluble

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1
Q

Solute + solvent=

A

Solution

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2
Q

What is the name for the solids that do dissolve

A

Soluble

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3
Q

If you mix water and an insoluble solid, what two things could happens

A

It goes cloudy

The solid sinks to the bottom

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4
Q

What is a solution made up of

A

Solute (solid) and solvent (liquid)

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5
Q

What does transparent mean

A

Solutions are transparent ie. clear/ see through

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6
Q

What do you see when an insoluble solid is mixed with water

A

This is cloudy.

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7
Q

What is the most common solvent

A

Water

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8
Q

Why is water the most common solvent

A

Because it dissolves lots of different solutes

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9
Q

What other liquids, apart from water can be used as a solvent

A

White spirit

Ethanol

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10
Q

What happens if you keep adding solute to a solvent

A

It gets to a point where no more can dissolve, this is called a saturated solution.

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11
Q

What is a saturated solution

A

Where the solvent can not dissolve any more of the solute

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12
Q

If you have a saturated solution, how do you get it back to normal

A

By adding more solute

Buy increasing the temperature

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13
Q

What is salt

A

A solid which dissolves in water. Which means it is soluble

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14
Q

You can see through salt water, what word describes that

A

Transparent/ clear

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15
Q

Solids that are like salt, what are they?

A

Soluble

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16
Q

Chalk does not dissolve, what does that mean

A

It is insoluble

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17
Q

When you mix chalk with water what happens

A

It goes cloudy

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18
Q

When you mix sugar with water, which is which

A

Sugar is the solute

Water is the solvent

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19
Q

Name a soluble solid

A

Salt
Water
Etc.

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20
Q

A word to describe orange squash

A

Solution

Transparent

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21
Q

What is a solute

A

A substance which dissolves

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22
Q

What is a solvent

A

A liquid in which a solute dissolves

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23
Q

What is a solution

A

A mixture produced when a solute dissolves in a solvent

24
Q

What does the term dissolve mean

A

When the solvent “breaks” apart the solute particles to form a solution

25
Q

What does the word insoluble mean

A

It describes a substance which does not dissolve in a solvent

26
Q

What does the word saturated mean

A

A solution containing the maximum amount of solute at a certain temperature

27
Q

What does suspension mean

A

A mixture of an insoluble solid and a liquid where the solid is evenly spread throughout the liquid

28
Q

What does solubility mean

A

The mass do solute which will dissolve in 100g of water at a certain temperature

29
Q

How are the particles in salt held together

A

In a fixed arrangement

30
Q

What can the particles in water do

A

Move around

31
Q

When the salt dissolves what happens to the particles

A

They are not held together anymore

32
Q

What do the particles in salt do to form a solution

A

Mix with the particles in water

33
Q

If you add 10g of salt and 100g of water what is the total mass of the solution

34
Q

What can you use to separate sand from salty water

A

Filter paper

35
Q

Why does filter paper separate sand and salt water

A

Because the sand grains are to big to go through the tiny gaps in the filter paper

36
Q

Why won’t the filter paper trap the salt

A

Because the particles of salt are very small, and they will fit through the holes

37
Q

According to solubility rules, what substances are soluble

A 
Sodium
Potassium
Ammonium
Nitrates
Most sulphates
Most chlorides
38
Q

What according to solubility rules are insoluble

A 
Silver sulphate
Barium sulphate
Calcium sulphate
Lead sulphate
Silver chloride
Lead chloride
Most carbonates, oxides and hydroxides
39
Q

What is zinc oxide

40
Q

Potassium chloride

41
Q

Sodium nitrate

42
Q

Sodium hydroxide

43
Q

Calcium nitrate

44
Q

Lead carbonate

45
Q

Magnesium sulphate

46
Q

Lead nitrate

47
Q

How do you get salt out of salt water

A

You leave in a warm place and slowly the salt with turn into crystals and the water will evaporate.

48
Q

Name four ways of separating mixtures

A

Evaporation
Filtering
Magnets
Sieve

49
Q

What is evaporation

A

Covertion of a liquid into a vapour/ gas

50
Q

What is condensation

A

Conversion of gas back to liquid

51
Q

What is distillation

A

Evaporation to condensation

52
Q

What is distillate

A

Something formed by distillation

53
Q

What types of energy is given out when burning food

A

Heat
Light
Chemical

54
Q

Which food would have the highest energy content

A

The one with the most calories/ kilajules

55
Q

How does a calormeter work?

A

Put food on the platinum tray. Seal the bomb. Pressure bomb with O2 to 8 bar (aprox). Add bomb to water reservoir. Use coil or wire to ignite food. Measure temperature change of water.

56
Q

What gas does a candle need to burn

57
Q

Where does gas exchange happen

A

In the alveoli

58
Q

What helps dissolve the alveoli

A

The thin layer of moisture
The thin capillary walls
The alveoli has a large surface area

Science (13 decks)

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