Save
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.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't know
Remaining cards (0)
Know
0:00
share
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

TermDefinition
Chemical Reaction A change in which 1 or more substances are converted into new substances.
Chemical Equation A way to describe a Chemical Reaction using chemical formulas and other symbols.
Balanced Chemical Equation has the same # of atoms of each element on both sides of the equation.
Chemical Reactions and Energy there is always an energy change when a chemical reaction occurs
Temperature when the temp. increases ,the rate of the reaction increases.
Concentration when reactants are more concentrated , the rate of chemical reaction will increase.
Surface Area when the surface area of the reactants increases, the reaction rate increases.
Catalyst a catalyst lowers the amount of energy needed to start a reaction.
Synthesis 2 or more substances combine to form another substance.
Decomposition 1 substance breaks down, or decomposes, into 2 or more substances.
Endothermic Reaction A reaction that gives off energy
Exothermic Reaction A reaction that absorbs energy
States of Matter Solid, liquid, gas
Activation Energy What is needed to start a chemical reaction
Arrow -----> you read the arrow as “yields” in a chemical equation or formula
Conservation of mass the amount of matter involved in a chemical reaction does not change. The total mass of the reactants must equal the total mass of the products
Coefficient a number placed in front of a chemical formula in an equation. Tells how many atoms or molecules of each reactant and product take part in the reaction.
Physical Changes alter only the physical properties of matter; no new substances are formed. Can be a change in size, shape or color; change in phase (by increasing or decreasing temperature: solid, liquid, gas)
Precipitate a solid that forms from solution during a chemical reaction; observable change that shows a chemical reaction took place
Created by: 150015595
 

 



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