Thermochemistry Flashcards
What are reactions that absorb heat called?
endothermic
What is enthalpy?
the energy used or produced in a chemical reaction
What is specific heat?
How much energy is needed to raise the temperature of 1 gram of a substance by 1 degree C
1 calorie I equal to
4.184 Joules
What are reactions that give off heat
Exothermic
What is thermochemistry
The study of heat changes during chemical and physical reactions
The amount of energy needed to raise the temperature of 1 gram of water by 1 degree Celsius is equal to
1 calorie
How does heat flow?
From warmer to colder objects
To convert J to C
Divide by 4.18
To convert K to kj
Divide by 1000
To convert cal to J
Multiply by 4.18
To convert kcal to J
Multiply by 1000 then multiply by 4.18
To find heat in joules
Q = MC DT
To find mass
Divide by mass and place other numbers in equation
To find finals temp
Divide by calories and then multiply by 4.18
