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