RPA Science GCSE RP Specific Heat Capacity of Materials

What is the specific heat capacity of a substance?

• The amount of energy required to raise the temperature of one kilogram of the substance by one degree Celsius

• The amount of energy required to raise the temperature of one gram of the substance by one degree Celsius

• The amount of energy required to raise the temperature of one kilogram of the substance by ten degrees Celsius

• The amount of energy required to raise the temperature of one gram of the substance by ten degrees Celsius

What is the purpose of the practical described in the video?

• To determine the specific heat capacity of vegetable oil

• To determine the specific heat capacity of water

• To determine the specific heat capacity of air

• To determine the specific heat capacity of metal

What is the first step in the practical?

• Placing a beaker on a balance and pressing the zero button

• Adding oil to the beaker and recording the mass

• Placing the thermometer on an immersion heater into the oil

• Reading the starting temperature of the oil

What does the joulemeter tell us in the practical?

• How many joules of energy were passed into the immersion heater

• How many joules of energy were passed into the beaker

• How many joules of energy were passed into the air

• How many joules of energy were passed into the surroundings

How long do we leave the setup in the practical?

• 10 minutes

• 20 minutes

• 30 minutes

• 40 minutes

What is the equation used to calculate specific heat capacity?

• Change in thermal energy = mass x specific heat capacity x temperature change

• Change in thermal energy = mass / specific heat capacity x temperature change

• Change in thermal energy = mass x specific heat capacity / temperature change

• Change in thermal energy = mass x temperature change / specific heat capacity

What are the results of the experiment in the video?

• Mass of oil: 0.95 kg, Temperature change: 55 degrees Celsius

• Mass of oil: 0.95 kg, Temperature change: 75 degrees Celsius

• Mass of oil: 0.75 kg, Temperature change: 55 degrees Celsius

• Mass of oil: 0.75 kg, Temperature change: 75 degrees Celsius

What is one of the problems that may affect the accuracy of the specific heat capacity calculation?

• Thermal energy passing on to the beaker and into the air

• Thermal energy passing on to the immersion heater

• Incorrectly reading the mass of the oil

• Incorrectly reading the final temperature of the oil

How can we reduce the problem of thermal energy passing on to the beaker and into the air?

• By using an insulator with a higher thermal conductivity

• By using an insulator with a lower thermal conductivity

• By using a larger beaker

• By using a smaller beaker

If you don't have a joulemeter, how do you find the energy in the circuit?

• E = power/time

• E = current x voltage

• E = power x time

• E = current x time