Themal Energy quiz game
Find the mass of an object that gains 25 degrees C when 400 calories of heat are added.
16 g
You add 627 calories of heat to a 300 g piece of iron, which has a specific heat of 0.11 calories. How many degrees C will its temperature increase?
19 degrees C
How many g of aluminum will increase temperature by 1 degree C if 1 calorie of heat is added? (round to hundredth.)
4.55 g
Lead has a specific heat of 0.03 calories. Find the calories of heat needed to increase 100 g by 15 degrees C.
45 calories
A 200 g piece of iron has a temperature of 25 degrees C. It has specific heat of 0.11 calories. How many calories of heat must be added to raise its temperature to 58 degrees C?
726 calories
Name the measurement units of the following terms: heat, mass, and temperature.
Calories, grams, degrees Celsius.
Potential Energy
Energy due to the position or composition of an object.
Heat
Energy that is in the process of flowing from a warmer object to a cooler object.
How are heat capacity and specific heat different?
Heat capacity is how much energy is needed to raise the whole object's temperature by 1 C. Specific heat is how much energy is needed to raise ONE GRAM of a substance's temperature by 1 C.
Principle of Heat Exchange
Heat energy in = heat energy out; energy flows from higher to lower levels
Law of Conservation of Energy (First Law of Thermodynamics)
In any chemical reaction or physical process energy cannot be created nor destroyed, but it can be converted from one form to another.
The specific heat of water is 1 calorie. What does this mean?
It takes one calorie of heat energy to raise 1 g of water by 1 degree C.
2 factors affecting heat capacity
Mass and chemical composition.
How mass affects heat capacity
More mass increases heat capacity.
Energy
The ability to do work or produce heat.
specific heat capacity
The amount of heat it takes to raise 1 G OF A SUBSTANCE'S temperature by 1 degree Celsius.
heat capacity
The amount of heat needed to increase the temperature of an OBJECT exactly 1 degree Celsius. A swimming pool might need 100,000 calories, while a bucket might need 100 cal.
Specific Heat
The amount of heat required to raise the temperature of one gram of a substance by one degree Celsius.
Kinetic Energy
The energy of motion.
Chemical Potential Energy
The energy stored in a substance because of its composition.
system
The set of substances/objects where the energy is changing.
Calorie
The specific heat of water; the amount of energy required to raise the temperature or one gram of water by one degree celsius.
∆T
The variable that stands for the change in a substance's temperature, in degrees Celsius.
m
The variable that stands for the mass of a sample, in grams.
Aluminum has a specific heat of 0.22 calories. Will it take more calories to raise the temperature of 100 g of aluminum by 10 degrees C, or water?
Water (1000 calories). Aluminum needs 220 calories.
Two forms of energy that can be either potential or kinetic:
mechanical and electrical
