Topic 5 ppq

Question 1

State the measurements needed to calculate specific heat capacity

Answer 1

-Mass of water
-Temperature change
-The energy supplied
-Detail of any of the above

Question 2

State two ways the apparatus for measuring heat could be improved

Answer 2

-Add lid
-Add insulation
-Add stirrer
-Use more sensitive thermometer
-Ensure heater fully submerged

Question 3

State the angle that the outward force makes with the wall of the tube

Answer 3

90º

Question 4

When air is pumped into the tube, the air gets warm, explain why

Answer 4

-Work is done
-Increase in kinetic energy

Question 5

When a piston is pulled AWAY, what increases

Answer 5

The volume

Question 6

Aluminium has a melting point of 660º, calculate it in kelvins

Answer 6

933 K

Question 7

Describe the motion of particles in liquid aluminium

Answer 7

-Motion is random
-Various speeds
-Bump into each other
-Faster than solid

Question 8

Volume = 3.6cm3 mass = 28g, Calculate the density

Question 9

Compare the motion of particles in steel when they are solid with their motion and when in molten state