Topic 14 - SHC Practical

Question 1

Outline the basic steps of the practical: Melting

Answer 1

Question 2

What safety precautions should be taken when using a bunsen burner?

Answer 2

Hair and loose clothing should be tied back
● Ensure the safety flame is used when not
heating the water
● Place a heatproof mat underneath

Question 3

What graph should be drawn with the data?

Answer 3

A graph of temperature against time.

Question 4

What would you expect the graph to look like whilst the ice is melting?

Answer 4

The temperature should remain roughly constant whilst it is melting since the energy is being used to break bonds in the substance.

Question 5

Part 2: Investigating specific heat capacity.

Outline the basic steps of the practical.

Answer 5

Question 6

What piece of equipment is connected to the heater to measure the amount of energy that is being transferred?

Answer 6

A joulemeter.

Question 7

What can you do to aid the heating process?

Answer 7

Continually stir the water as it is being heated so the heat is evenly distributed.

Question 8

Define the ‘Specific Heat Capacity’ of a substance.

Answer 8

The amount of energy needed to raise the temperature of 1 kilogram of a substance by 1°C.

Question 9

State the units for Specific Heat Capacity.

Answer 9

J/Kg°C

Question 10

State the equation used to calculate the energy change when a substance is heated. Give appropriate units.

Answer 10