University:
College
Course:
College Physics
Academic year:

2023
Views:

454

Pages:

1
Author:

oxyarctangent

Name:________________________ Period:_____ Worksheet- Introduction to Specific Heat Capacities Heating substances in the sun: The following table shows the temperature after 10.0 g of 4 different substances have been in direct sunlight for up to 60 minutes. Time (minutes) Air (° C) Water (° C) Sand (° C) Metal (° C) O (initial) 15.0 min 30.0 min 25°C 28.9°C 32.5°C 25°C 26.2°C 27.5°C 25°C 30°C 35°C 25°C 35°C 45°C 45.0 min 60.0 min 36.2°C 40°C 28.8°C 30°C 40°C 45°C 55°C 65°C Step 1: Create a line graph for each substance on graph below. Label the substances. Step 2: Answer questions 1. Order the substances based on the time required to heat them from : slowest fastest 2. Which do you think will cool the fastest? Explain 3. When you boil water in a pot on the stove, which heats faster, the metal or the water? Explain. 4. Why do you think different substances heat up and cool down at different rates? ***Specific heat capacity = the amount of heat needed to raise the temperature of 1 g of a substance by 1 degree. *** 5. Based on the definition above, which of the 4 substances do you think has: a) the highest specific heat capacity? b) the lowest heat capacity? 6. Here are the heat capacities of the four substances: 4.18 J/g °c, 1.00 J/g °c, 0.80 J/g °c, & 0.60 J/g °c. Match & then label each substance with its specific heat capacity on the graph. 7. If something has a high specific heat capacity will it take a lot of heat or a little heat to change its temperature? Explain. (careful! Use the definition, your graph, and the data from #6) 8. Assuming they both start at the same temperature, which will heat up faster, a swimming pool or a bath tub? Explain your thinking.