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

Physical Science-21

Chapter 21 Vocabulary Words

QuestionAnswer
Chemical Reaction A change in which one or more substances are converted into new substances.
Reactant The substances that react.
Product The new substances that are produced.
Chemical Equation A way to describe a chemical reaction using formulas and other symbols.
Coefficient The numbers in a chemical equation that represents the number of units of each substance taking part in a chemical reaction.
Subscript In a chemical formula, a number below and to the right of a symbol indicating number of atoms.
Balanced Chemical Equation This has the same number of atoms of each element on both sides of the equation.
Combustion Reaction Occurs when a substance reacts with oxygen to produce energy in the form of heat and light.
Synthesis Reaction Two or more substances combine to form another substance.
Decomposition Reaction Occurs when one substance breaks down into two or more substances.
Single-displacement Reaction When one element replaces another element in a compound.
Double-displacement Reaction When the positive ion of one compound replaces the positive ion of the other to form two new compounds.
Precipitate An insoluble compound that comes out of solution during a double-displacement reaction.
Oxidation The term to describe the loss of electrons in a reaction.
Reduction The term to describe the gain of electrons in a reaction.
Chemical Bond The force that holds two atoms together.
Exergonic Reaction Chemical reactions that release energy.
Exothermic Reaction Energy given off in a reaction in the form of heat.
Endergonic Reaction Chemical reaction that requires energy to begin.
Endothermic Reaction Chemical reaction that requires heat energy to begin.
Catalyst A substance that speeds up a chemical reation without being permanently changed itself.
Inhibitor A substance that slows down a chemical reaction.
Created by: mrscummings
Popular Physical Science 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