5 Solids, Liquids and Gases

Question 1

Density equation

Answer 1

Density (Kg/m^3) = Mass (kg) / Volume (m^3)

Question 2

Pressure equation

Answer 2

Pressure (Pa) = Force (N) / Area (m^2)

Question 3

Pressure difference

Answer 3

Pressure difference (Pa) = Height (m) x Density (Kg/m^3) x Gravitational Field Strength (N/Kg)

Question 4

What will heating a system cause?

Answer 4

• Increase energy
• Increase temperature or produce change of state

Question 5

Solids

Answer 5

• Lattice arrangement
• Vibrating on the stop
• Tightly packed

Question 6

Liquids

Answer 6

• No fixed position
• Move randomly
• Touching eachother with gaps

Question 7

Gas

Answer 7

• No fixed position
• Raid, random motion
• Spread out

Question 8

Change in thermal energy equation

Answer 8

Change in thermal energy (J) = Mass (Kg) x Specific heat capacity (J/KgºC) x Change in temperature (ºC)

Question 9

Absolute zero

Answer 9

The temperature at which particles have no energy.

-273 ºC / 0 K

Question 10

Kelvin to Celcius

Answer 10

- 273 (substract 273)

Question 11

Celcius to Kelvin

Answer 11

+ 273 (add 273)

Question 12

How does gas exert pressure?

Answer 12

When a gas particle collides with the container wall, it exerts a force on the wall. Pressure is the sum of the force exerted by all the particles in the container.

Question 13

Kelvin and KE

Answer 13

Kelvin temperature of a gas is proportional to the average kinetic energy

Question 14

Pressure and volume

Answer 14

If the temperature is constant, the pressure and volume are inversely proportional.

Question 15

Boyle’s Law

Answer 15

P1 x V1 = P2 x V2

Question 16

Gay Lussacs Law

Answer 16

P1 / T1 = P2 / T2