Chem T/F chapter 15
heat capacity
"C" for water is 4.184
how many joules in 800 CAL?
800CAL x 1000cal/1CAL x 4.184/1cal = 3347200J
A calorie is the SI unit of heat and energy
FALSE- JOULE
A calorie is the amount of energy required to raise the temperature of one gram of pure water by one degree celsius.
TRUE
Heat is a form of energy that flows from a warmer object to a cooler object.
TRUE
Kinetic energy is energy of motion
TRUE
One calorie equals 4.184 joules
TRUE
energy is the ability to do work or produce heat. T/F
TRUE
specific heat
any substances is the amount of heat required to raise the temp of one gram of that substance by one degree celsius
endothermic
energy enters reaction on reactant side
exothermic
heat being released
endothermic process
heat coming in
energy
is the ability to do work or produce heat. it exists in 2 basic forms. Potential and Kinetic
Thermochemistry
is the study if heat changes that accompany chemical reactions and phase changes
Joule
the SI unit of energy and heat 1 calorie = 4.184 J
calorie
the amount of energy required to raise the temperature of one gram of pure water by one degree Celsius
chemical potential energy
the energy that is stored in a substance because of its composition
The specific heat of a substance is the amount of heat required to raise the temperature of one gram of that substance by one degree Celsius.
TRUE
To convert kilojoules to joules, divide the number of kilojoules by 1000 joules/1 kilojoule.
TRUE
When fuel is burned, some of its chemical potential energy is lost as heat.
TRUE
law of conservation of energy
states that in any chemical reaction or physical process, energy can be converted from one to another, neither created nor destroyed
heat
symbol 'q' which is energy that is in the process of flowing from a warmer object to a cooler
Heat of combustion
the quantity of thermal energy given off when a certain amount of substance burns
exothermic
energy exits the reaction on the product side
*** ENERGY MUST BE ADDED TO PULL ATOMS APART
...
Chemical potential energy is energy stored in a substance because of its composition.
FALSE
Chemicals participating in a chemical reaction contain only potential energy.
FALSE
One nutritional Calorie is equal to 100 calories
FALSE
