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

9Sci CH16

9th Science CH16 Chemical Reactions

balanced chemical equation a chemical equation that has the same number of atoms of each element on both sides of the equation
catalyst a substance that speeds a chemical reaction without itself being permanently changed
chemical reaction a change in which one or more substances are converted to different substances (the reactants are changed into the product)
chlorofluorocarbon (CFC) a group of compounds whose decomposition releases chlorine atoms that destroy ozone molecules in the upper atmosphere; used, for example, in air conditioning systems
coefficient in a chemical equation, the number that represents the number of units of each substance taking part in a chemical reaction
decomposition reaction a chemical reaction in which a substance breaks down (decomposes) into two or more simpler substances
double-displacement reaction a chemical reaction in which two ionic compounds in solution react, forming a precipitate, gas, or water
endothermic reaction a chemical reaction in which energy is absorbed
exothermic reaction a chemical reaction in which energy is released
inhibitor a substance that slows or prohibits a chemical reaction
precipitate an insoluble compound formed during a double-displacement reaction
product in a chemical reaction, the substances produced by the reaction
reactant the starting substances in a chemical reaction
single-displacement reaction a chemical reaction in which one element replaces another element in a compound
synthesis reaction a chemical reaction in which two or more substances combine to form a different substance