Properties of Water

Question 1

Describe specific heat capacity

Answer 1

Amount of energy needed to raise the temperature of one gram of the substance by one degree Celsius

Question 2

State the formula of specific heat capacity

Answer 2

Q=mcT

Question 3

State the formula used to determine density of a substance

Answer 3

d=m/v

Question 4

Describe density

Answer 4

Measure of the amount of mass that is contained in a certain volume of that substance

Question 5

State whether water has a high or low specific heat capacity

Answer 5

High

Question 6

Describe the density of water

Answer 6

Less dense in solid form than in liquid form

Question 7

State what allows the low density of water in solid form

Answer 7

Hexagonal arrangement of water molecules

Question 8

State whether or not pure water conducts electricity

Answer 8

Very slightly

Question 9

State what allows water molecules to react slightly when current is applied

Answer 9

Ability of water molecules to form a small number of ions

Question 10

State whether pure water is scientifically considered a conductor or non conductor

Answer 10

Non-conductor

Question 11

State the 5 effects of hydrogen bonding on the properties of water

Answer 11

1. relatively high melting and boiling points
2. expansion of water upon freezing
3. high latent heat
4. high specific heat capacity
5. ability of water to dissolve other substances

Question 12

State what water is sometimes referred to as

Answer 12

The universal solvent

Question 13

Describe solubility

Answer 13

Extent to which a solute can dissolve in a solvent

Question 14

Describe solute

Answer 14

A dissolved substance in a solution

Question 15

Describe solvent

Answer 15

The liquid component of a solution

Question 16

State what the solubility of one substance in another is determined by

Answer 16

Polar and non-polar nature of the solute and solvent

Question 17

State the rule of solubility employed by chemists

Answer 17

Like dissolves like

Question 18

State what a polar solvent generally dissolves

Answer 18

Polar solute

Question 19

State what a non-polar solvent generally dissolves

Answer 19

Non-polar solvent

Question 20

When a salt is placed in water and dissolves, positive and negative ions become surrounded by water molecules. State what individual ions that are surrounded by water are referred to as

Answer 20

Hydrated ions

Question 21

State whether or not polar gases dissolve easily in water

Answer 21

Yes

Question 22

State whether or not non-polar gases dissolve easily in water

Answer 22

No

Question 23

State what an increase in pressure may increase

Answer 23

Solubility of a gas in liquids

Question 24

State what an increase in temperature may decrease

Answer 24

Solubility of a gas in liquids

Question 25

Describe dissociation

Answer 25

Process by which particles in the solid state are pulled apart by water and become able to move around

Question 26

State what dissociation results in

Answer 26

Solid dissolving and a solution being formed

Question 27

State what precipitation reactions result in

Answer 27

Solutions of a soluble substances are mixed and an insoluble substance is formed

Question 28

State what an ion in ionic equations that does not form or change is referred to as

Answer 28

Spectator ion

Question 29

Describe saturated solution

Answer 29

A solution in which the maximum amount of solvent has been dissolved

Question 30

Describe unsaturated solution

Answer 30

A solution containing less that the maximum amount of solute that can dissolve

Question 31

Describe supersaturated solution

Answer 31

A solution in which there is a greater amount of solute dissolved at a particular temp than predicted by solubility curve