Properties of matter

Question 1

Specific heat capacity

Answer 1

The energy required to change the temperature of 1kg of a substance by 1 degree

Question 2

Heat

Answer 2

Result of the movement of particles in a material. (Classed as a type of kinetic energy)

Question 3

Temperature

Answer 3

A measure of the mean kinetic energy of its particles

Question 4

Absolute zero

Answer 4

The lowest temperature possible occurs when particles in the substance are not moving. (0k or -273 degrees)

Question 5

Conservation of energy

Answer 5

Energy cannot be created or destroyed, it can only be transdormed form one form to another

Question 6

What is required when a substance shapes state
Solid ——} liquid
Liquid ——} gas

Answer 6

Requires energy

Question 7

When a substance changes state from:
Gas —-} liquid
Liquid —-} solid
Does it rquire energy

Answer 7

No

Question 8

When changing state of solid to liquid, what type of energy is required

Answer 8

Fusion

Question 9

When changing state from liquid to gas, what type of energy is required

Answer 9

Vapourisation

Question 10

Pressure

Answer 10

The amount of force per unit area

Question 11

Latent heat capcity

Answer 11

A measure of the energy required to change the state of a substance

Question 12

Latent heat of fusion

Answer 12

The energy required to change a unit mass of solid to liquid at a constant temperature

Question 13

Is pressure directly proportional to temperature

Answer 13

Yes

Question 14

Boyle’s law

Answer 14

Gas compressed - volume decreased

Particles become closer - hit walls more often - force increases - pressure increases

Question 15

Gay - Lussac’s law

Answer 15

Average speed gas particles increase ——} increasing temperature

Heat gas - speed increase - collisions occur more often - more force - increasing pressure

Question 16

Charles’ law

Answer 16

Gas heated - average speed particles increase - collisions more often - more force

Walls container not fixed - container expand - reduce rate collisions - measure constant value

Question 17

Kinetic model

Answer 17

Gas pressures is caused by thousands of tiny particles hitting off each other and container walls

Question 18

Boyle’s law experiment

Answer 18

Connect a syringe to a pressure sensors and a computer

Change the volume of the gas by pushing the syringe.

Record the pressure at a range of volumes.

Question 19

Gay-lussac’s law experiment

Answer 19

Change the temperature of the gas
by submerging in water baths.

Record the pressure at a range of
temperatures.

Question 20

Charles’ law experiment

Answer 20

Change the temperature of the gas
by submerging in water bath.

Record the temperature and
corresponding volume of gas .

Plot a graph of volume versus
Temperature (note the temperature should be in Kelvin).

Question 21

How does heat flow

Answer 21

From the hot object to the cold objects

Eg boiling water poured into mug
- Heat from water is transferred to mug

Question 22

When does the temperature of an object increase

Answer 22

When it gains energy

Question 23

Thing the cause difference in specific heat capaity

Answer 23

Material

Mass

Question 24

What is pressure caused by

Answer 24

Particles colliding with the walls of the container

Question 25

If 50 degrees metal block was played in water of 50 degrees what would happen ?

Answer 25

Nothing as there is no energy trasfer