Busy. Please wait.
or
show password
Forgot Password?
Don't have an account?  Sign up 
or
Username is available taken
show password

why


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. We do not share your email address with others. It is only used to allow you to reset your password. For details read 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.

Remove Ads
Don't know
Know
remaining cards
Save
0:01
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
Retries:
restart all cards




share
<embed>
apps
export
edit
print
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

C2.4 Glossary

Rates and Energy Glossary

TermDefinition
Catalyst A substance that speeds up a chemical reaction but remains chemically unchanged itself at the end of the reaction.
Collision Theory An explanation of chemical reactions in terms of reacting particles colliding with sufficient energy for a reaction to take place.
Endothermic A reaction that takes in energy from the surroundings.
Exothermic A reaction that gives out energy to the surroundings.
Activation Energy The minimum energy needed to start off a reaction.
Created by: ChosenHill