Specific Heat Capacity

Question 1

How does internal energy relate to temperature?

Answer 1

Specific Heat Capacity

Question 2

What is Internal Energy?

Answer 2

Total energy stored by the particles making up a substance of system.

Question 3

What are the two types of internal energy stores?

Answer 3

Potential Energy Stores and Kinetic Energy Stores

Question 4

What are the Potential Energy Stores?

Answer 4

Things like gravitational and elastic potential.

Question 5

What is Kinetic Energy Stores?

Answer 5

The movement energy of particles.

Question 6

What does it mean by an increase in temperature?

Answer 6

When heating up a substance - the kinetic energy store gains internal energy. Which causes an increase in temperature. (A measure of the average internal energy of a substance)

Question 7

What is the specific heat capacity of water?

Answer 7

4200J

Question 8

What is the specific heat capacity of mercury?

Answer 8

139J

Question 9

What is specific heat capacity?

Answer 9

The amount of energy needed to raise the temperature of 1kg of a substance by 1 degrees celcius. Also the amount of energy released as a substance cools.

Question 10

What is the equation for specific heat capacity?

Answer 10

ΔE (change in internal energy - joules) = m (mass - kg) c (specific heat capacity - J/kg°C) ΔT (change in temp - °C)

Question 11

Why might real life experiment results not be as accurate as the equation, and not give the exact same number?

Answer 11

Because in real life - energy would probably get lost to it’s surroundings. So use a lid + insulate well to get as accurate results as possible.