Questions: Each test tube is filled with 5.0 mL 21°C 23°C 19°C Each chemical is heated equally. (Each chemical started at 15°C before heating) Final temperatures are shown. 4) Which chemical has the highest specific heat capacity? 5) Which chemical has the lowest specific heat capacity?

Solution Steps

We are given three test tubes (A, B, and C), each filled with 5.0 mL of a different chemical. Each chemical is initially at 15°C and is heated equally. The final temperatures are 21°C for A, 23°C for B, and 19°C for C.

Specific heat capacity is the amount of heat required to raise the temperature of 1 gram of a substance by 1 degree Celsius. A substance with a higher specific heat capacity requires more heat to raise its temperature compared to a substance with a lower specific heat capacity, given the same mass and the same amount of heat applied. Since each chemical received the same amount of heat, the smaller the temperature change, the higher the specific heat capacity.

The temperature changes are: A: 21°C - 15°C = 6°C B: 23°C - 15°C = 8°C C: 19°C - 15°C = 4°C Since C has the smallest temperature change (4°C), it has the highest specific heat capacity.

Since B has the largest temperature change (8°C), it has the lowest specific heat capacity.

Final Answer