Pupil sheet · Specific heat capacity
Specific heat capacity — return questions
Name ______________________ Date ____________
Use one to two weeks after the lessons. Keep the notes and the lesson closed.
1. state / describe / define / calculate / explain
Keep the lesson closed. (a) State what happens to the internal energy of an object when its temperature rises. (b) Describe what happens to the particles of a solid when its temperature rises. (c) Define specific heat capacity. (d) Calculate the energy needed to warm a 0.40 kg block of aluminium from 20 °C to 45 °C. The specific heat capacity of aluminium is 900 J/(kg °C). (e) Explain why a value of c measured with a bare, uninsulated block usually comes out higher than the book value. (f) Describe how to measure the specific heat capacity of a metal block in a laboratory: what you measure, which instrument you use for each, how you cut down energy losses, and how you work out c.
(a) Internal energy
(b) The particles
(c) Definition
(d) Energy needed
(e) Why the value is too high
(f) How to measure c for a block
2. state / describe / explain / calculate
Keep the lesson closed. (a) State the mass of 1000 cm³ of water in kilograms. (b) Describe how to measure the specific heat capacity of water using an immersion heater, a joulemeter and a thermometer. (c) Explain why the water is stirred and why the beaker is lagged. (d) Calculate the energy needed to warm 0.50 kg of water from 20 °C to 40 °C. The specific heat capacity of water is 4200 J/(kg °C). (e) Explain why a storage heater uses a large mass of bricks heated to a high temperature.
(a) Mass of 1000 cm³ of water
(b) Method
(c) Stirring and lagging
(d) Energy needed
(e) Storage heater