Particle model & pressure

Question 1

What is internal energy

Answer 1

internal energy is the sum of the potential and kinetic energy that make up the particles (atoms) in a system. Change in internal energy cause change of state

Question 2

Equation linking pressure and volume

Answer 2

PV=constant

Question 3

Equation linking change in thermal energy, mass, specific heat capacity and temp.

Answer 3

ΔE = mcΔθ

Question 4

Equation linking density, mass and volume

Answer 4

density=mass/volume
p=m/v

Question 5

What is specific heat capacity (c)

Answer 5

the amount of energy needed to raise the temp, of 1kg of a substance by 1 degrees Celsius

Question 6

unit for energy

Answer 6

Joules (J)

Question 7

Unit for mass

Answer 7

kg/g

Question 8

unit for temperature change

Answer 8

(°C)

Question 9

What is latent heat

Answer 9

amount of energy required to change the state of 1kg of substance without changing its temp.

Question 10

Equation linking energy for a change of state, mass, specific latent heat

Answer 10

E=ml

Question 11

What is Boyle’s law

Answer 11

Boyle’s law states that when the temperature of a given mass of confined gas is constant, the product of its pressure and volume is also constant.