Save
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account. Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Thermochemistry

TermDefinition
calorimetry the process of measuring the amount of heat lost or gained in a chemical reaction
calorimeter An insulated device that contains a known mass of water and is used to determine the enthalpy change in a chemical reaction or process (such as dissolving ionic compounds or heat exchange in a metal)
enthalpy the energy stored in a substance
work the ability to cause motion or produce heat
heat of reaction the enthalpy change that occurs during a reaction; the difference between the PE of the reactants and the products
endothermic a process in which energy is absorbed from the surroundings; results in a decrease in temp
exothermic a process in which energy is released into the surroundings; results in an increase in temp
thermochemistry The study of thermal changes in chemical reactions
kinetic energy (KE) energy of motion
potential energy (PE) stored energy
catalyst a substance used during a reaction to lower the activation energy needed to cause the reaction to occur
kinetic-molecular theory all atoms are in constant motion
thermal energy kinetic energy of atoms; heat energy
activation energy the energy required to convert reactants into the activated complex
temperature a measure of the average kinetic energy of a substance
heat KE transferred between two substances because of a difference in temperature
specific heat the energy required to raise the temperature of 1 g of a substance 1 C
delta T the change in temperature; final temp - initial temp
q the heat absorbed or released in the heat equation
thermal equilibrium when two substances have the same average KE (same temp)
activated complex the short term, high energy, intermediate state during a chemical reaction when bonds are broken but new bonds are not yet formed.
enthalpy change the heat that passes into or out of a system during a chemical reaction or other process
Created by: vcanfield
Popular Chemistry sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards