Specific Heat Capacity Experiments with Aluminum

The video tutorial covers an experiment to determine the specific heat capacity of aluminum. It begins with an introduction to the concept of specific heat capacity and the equation E = mcθ. The setup involves a 1 kg aluminum block, a 50-watt heater, and a thermometer. The experiment measures the temperature change of the block when heated for 10 minutes. The energy supplied is calculated using E = P × t. The final specific heat capacity is calculated and compared to the known value, with discrepancies discussed due to heat loss and other factors.

What is the specific heat capacity of a substance?

• The amount of energy required to raise the temperature of 1 kilogram of a substance by 1 degree Celsius.

• The amount of energy required to raise the temperature of 1 kilogram of a substance by 10 degrees Celsius.

• The amount of energy required to raise the temperature of 1 gram of a substance by 10 degrees Celsius.

• The amount of energy required to raise the temperature of 1 gram of a substance by 1 degree Celsius.

Which equation is used to calculate the energy supplied or absorbed by a substance?

• E = m + c + θ

• E = mc/θ

• E = mθ/c

• E = mcθ

What is the purpose of the insulation in the experiment?

• To measure the temperature more accurately.

• To cool down the aluminum block.

• To reduce heat losses to the surroundings.

• To increase the temperature of the aluminum block.

What is the power of the heater used in the experiment?

• 50 watts

• 25 watts

• 100 watts

• 75 watts

Why does Catherine place a few drops of water in the thermometer hole?

• To increase the temperature of the block.

• To clean the thermometer.

• To improve contact between the thermometer bulb and the aluminum block.

• To cool down the thermometer.

What is the initial temperature of the aluminum block?

• 25 degrees centigrade

• 16 degrees centigrade

• 10 degrees centigrade

• 20 degrees centigrade

What is the final temperature of the aluminum block after the experiment?

• 30 degrees centigrade

• 40 degrees centigrade

• 43 degrees centigrade

• 50 degrees centigrade

What is the calculated specific heat capacity of aluminum from the experiment?

• 900 joules per kilogram degree centigrade

• 1,111 joules per kilogram degree centigrade

• 1,000 joules per kilogram degree centigrade

• 950 joules per kilogram degree centigrade

What is the actual specific heat capacity of aluminum?

• 900 joules per kilogram degree centigrade

• 800 joules per kilogram degree centigrade

• 1,200 joules per kilogram degree centigrade

• 1,000 joules per kilogram degree centigrade

Why might the experimental value of specific heat capacity differ from the actual value?

• Because some heat is lost to the surroundings.

• Because the heater was not powerful enough.

• Due to incorrect time measurement.

• Due to incorrect mass measurement.