A student does an experiment using 0.2 kg of water. Here is some information from the experiment. Describe how the student should carry out the experiment, including the equipment used. In your answer calculate the change in internal energy for the water. You may include a diagram in your answer. – 7505

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1. To find the specific heat capacity of a liquid:
   First, place 200 g of the liquid into a beaker and measure the mass to make sure it’s correct.
   Put a heater and a thermometer into the liquid.
   Connect the heater to a power supply and make sure everything is set up properly, including using insulation around the beaker to reduce heat loss.
   Measure the starting temperature of the liquid.
   Turn on the heater and use a stopwatch to time how long it’s on for.
   After heating, measure the final temperature and calculate the temperature change.
   Use a joule meter or the formula
   𝐸=𝐼×𝑉×𝑡
   E=I×V×t to calculate the energy supplied.
   E = m × c × ΔT
   e.g.
   E = 0.2 × 4200 × 20 = 16,800 J
   This gives the amount of energy transferred to the liquid.

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