Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

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.
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.
Don't know
remaining cards
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:
restart all cards
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

chemical reactions

activation energy what is needed to start a chemical reaction
arrow you read the arrows as yields in a chemical equation or formula
characteristics of a chemical reactions changes in energy or changes in properties color change precipitate forms or temperature.
chemical changes alter the chemical properties of matter
chemical equations a shorter easier way to show chemical reactions by using symbols instead of words
coefficient a number placed in front of a chemical formula in a equation
conservation of mass the amount of matter involved in a chemical reaction that does not change
decomposition reaction a compound breaks down into simpler substances
endothermic reaction an observable change in energy that shows a chemical reaction took place
exothermic reaction an observable change in energy that shows that a chemical reaction took place gives of energy makes it feel warmer
physical changes alter only physical properties of matter no new substances are formed
precipitate a solid that forms from a solution during a chemical reaction. observable changes that show a chemical reaction took place
products the materials you have after a chemical reaction
reactants the materials you have at the beginning of a chemical reaction
replacement reaction one part of a compound is displaced by an element or compound from another substance.
states of matter solid liquid gas
subscripts show the number of atoms of an element in a molecule or the ratio of elements in a compound
synthesis reaction two substances combine to form a new coumpound
Created by: 150007670