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Flashcards in Particle Model Of Matter Deck (31):
1

Three states of matter

Solids, liquids, gas

2

Which states are incompressible

Solid and liquid

3

Solid particles

Fixed pattern, fixed size and shape

4

Liquid particles

Fixed size, particles are free to move, can change shape to fit in the container

5

Gas particles

Large gaps between,compressible, can change size and shape

6

Density of a material is:

It’s mass per unit volume

7

Formula for density

Density= mass/volume

8

Density is measured in

Kg/m^3

9

Required practical

Text book pg84

10

Internal energy is

Total kinetic energy and potential energy of all the particles in the system and are stored by particles

11

As energy is added to a system…

It’s temperature will increase

12

At the melting or boiling point

Energy being added causes the substance to change state not temperature

13

Change of state is

Reversible

14

It is a physical change that

Alters the internal energy but not the temperature or mass

15

EnEnergy for a change of state=

Mass X specific latent heat

16

Latent heat of fusion is

The energy needed for a substance to change from solid to liquid

17

The latent heat of vaporisation is

The energy needed for substance to change from liquid to gas

18

The horizontal parts of heating and cooling graphs indicate

Where energy is being used change state

19

The particles Gas are in

Constant random motion

20

Temperature of the gas is related to

The average kinetic energy of the particles

21

When the particles of a gas collide The wall

They exert a force on the wall which is felt as pressure

22

If the volume is kept constant increasing the temperature increases

The speed of the particlesThis increases the frequency and force which The particles hit the walls and increase the pressure

23

Changing the volume of a gas can also

Change the pressure

24

The temperature is kept constant increasing the size of the container well

Reduce the pressure of the particles to collide with the walls less frequently

25

If the temperature is kept constant reducing the volume will

Increase the pressure of the particles will collide with the walls more frequently

26

Pressure x Volume=

Constant

27

Pressure is measured in

Pascals

28

Volume is measured in

M^3

29

When work is done on a gas

Increases the internal energy of the gas and can cause an increase in temperature

30

The bicycle pump is compressed

The piston hit the gas particles giving them energy so the temperature increases

31

Is the particles are moving faster

They collide with objects more frequently and the pressure will increase