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 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

Science vocab

chemistry

TermDefinition
Phisical change A change tjat alters the form or apperance of a material but does not make the material into another substance
Chemical change A change in which one or more substances combine or break apart to form new substance
Reactant A substance that enters into chemical reaction
Product A substance formed as a result of a chemical reaction
Precipitate A solid that forms from a solution during a chemical reaction
Exothermic reaction A reaction that releases energy, usually in the form of heat
Endothermic reaction A reaction that absorbs energy
Chemical equation A short , easy way to show a chemical reaction, using symbols
Law of consevations of mass The priciple that the total amount of matter is neither created nor destoyed during any chemical or physical change.
Open system A system in which matter can enter from or escape to the surroundings
Closed system A system in which no matter is allowed to enter or leave
Coefficient A number in front of a chemical formula in an equation that indicates how many molecules or atoms of each reactant and product are involved in a reaction
Synthesis A chemical reaction in which two or more simple substances combine to form a new, more complex substance
Decomposition A chemical reaction that breaks down compounds into simpler products
Replacement A reaction in which one elements replaces another in a compound or when two elements in different compounds trade places
Activation energy The minimum amount of energy needed to start a chemical reaction
Concentration The amount of one mateeial in a certain volume of another material
Catalyst A material that increases the rate of a reaction by lowering the activation energy
Enzyme A type of protein that speeds up a chemical reaction in a living thing
Inhibitor A material that decreases the rate of a reaction
Created by: clivcliv10