Science Solutions

Question 1

What is Dissolve?

Answer 1

When a solid combines with a liquid to form a solution.

Question 2

What is a Solution?

Answer 2

A solid dissolved in a liquid.

Question 3

What is a Solute?

Answer 3

The solid which dissolves in a liquid to make a solution.

Question 4

What is a Solvent?

Answer 4

The liquid in which a solid dissolves to make a solution.

Question 5

What is a Soluble?

Answer 5

A solid that can dissolve in a solvent is said to be soluble.

Question 6

What is an Insoluble?

Answer 6

A solid that cannot dissolve in a solvent is said to be insoluble.

Question 7

What is Solubility?

Answer 7

The amount of solute that will dissolve in 100g of a solvent.

Question 8

What is Residue?

Answer 8

The solid bits that are trapped by filter paper.

Question 9

What is Filtrate?

Answer 9

The liquid that runs through the filter paper.

Question 10

What is Evaporation?

Answer 10

When a liquid turns into gas.

Question 11

What is Condensation?

Answer 11

When a gas turns into a liquid.

Question 12

What is the Melting point/freezing point?

Answer 12

The temperature at which a substance changes between a solid and a liquid.

Question 13

What is the Boiling point?

Answer 13

The temperature at which a substance changes between a liquid and a gas.

Question 14

When is a solution formed?

Answer 14

A solution is formed when solid (the solute) dissolves in a liquid (the solvent).

Question 15

Is a solution always transparent, translucent or opaque?

Answer 15

A solution is always transparent (see-through).

Question 16

How do you know if you don’t have a correct solution?

Answer 16

If the liquid is cloudy or opaque.

Question 17

How can you measure a solution in a beaker

Answer 17

Put it on a scale and measure it in mass

Question 18

What can increase the speed of which the solute dissolves?

Answer 18

By increasing the temperature of the solvent.

Question 19

What is the most common solvent. (and other liquids)

Answer 19

Water. Other liquids (e.g. white spirit, ethanol) which can also be used a solvents.

Question 20

What is a saturated solution?

Answer 20

When there is a point that if you add too much solute to a solvent, you will get to a point where no more can dissolve.

Question 21

Is there a way to dissolve more solute?

Answer 21

More solid will dissolve if you add more solvent or increase the temperature.

Question 22

What are 4 seperation techniques?

Answer 22

Filtration, Evaporation, Distillation and Chromatography.

Question 23

Draw and label a diagram of the Filtration technique:

Answer 23

K.O*

Question 24

Draw and label a diagram of the Evaporation technique:

Answer 24

K.O*

Question 25

Draw and label a diagram of the Distillation technique:

Answer 25

K.O*

Question 26

Draw and label a diagram of the Chromatography technique:

Answer 26

K.O*

Question 27

Mass of a Solution =....

Answer 27

Mass of Solute + Mass of Solvent

Question 28

In particles, when can a Solution become Saturated?

Answer 28

When there is no space between the solvent particles for the solute particles to dissolve.

Question 29

What is the Function of Filtration?

Answer 29

To separate undissolved solids from a liquid.

Question 30

When will filtration not work?

Answer 30

If a solute dissolves in a solvent (i.e. its a soluble and filtration will not work)

Question 31

Give uses of distillation:

Answer 31

Purifying Sea water, Produces alcoholic drinks.

Question 32

What is the Function of Evaporation?

Answer 32

To separate dissolved substances from a solution.

Question 33

What is the Function of Distillation?

Answer 33

The liquid from the dissolved solid in a solution or one liquid from a mixture of liquids.

Question 34

What is the Function of Chromatography?

Answer 34

To separate mixtures of dissolved solids (e.g. from pen ink).