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Flashcards in Paper 1 Practicals Deck (8):
1

What apparatus are used to measure the specific heat capacity?

-4 1kg metal blocks , aluminium, steel,copper,brass
-heater
-insulation
-joule meter
-thermometer

2

Health and safety in the specific hear capacity experiment?

Wear eye protection
-take care

3

Process of measuring specific heat capacity?

1. Measure the initial temperature of the block and set the potential difference of the power supply to 10v . Turn on the power supply an start a stop watch.
2. Every minute for 10 minutes record the temperature and how fast it increases
3. Repeat steps 1 and 2 for different metals

4

How to prepare for a specific heat capacity experiment?

-measure the mass of the block being used , then wrap it in an insulating layer to reduce energy being transferred to the surroundings
-insert thermometer and heater into block

5

Equation for specific heat capacity

C= change in E/ mass x temperature change.

6

How to calculate specific heat capacity from the experiment?

Read number of joules on joule meter, find mass of the block and the temperature change.

7

What does the joule meter tell us?

How many joules of energy are being used

8

Sources of innacuarcy in specific heat capacity experiment?

-thermal energy passing put pf beaker.: use an insulator with lower thermal conductivity
-not all thermal energy passing into the oil: ensure that immersion heater is fully submerged
-incorrectly reading thermometer: use an electronic temperature probe