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.
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
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

GED Physical Science

Lesson 3 Chemical Reactions

TermDefinition
chemical reaction the atoms or ions of one or more substances, called the reactants, are rearranged, resulting in one or more different substances called the products
reactants any substance that undergoes a chemical change in a given reaction
products a substance obtained from another substance through chemical change
law of conservation of mass A principle which states that matter is neither created or destroyed during a chemical reaction, so the mass of the products always equals the mass of the reactants
chemical equations a symbolic representation showing the kind and amount of the starting materials and products of a reaction
coefficient a number or quantity placed (generally) before and multiplying another quantity, as 3 in the expression 3x
endothermic reaction a reaction in which the reactants absorb energy from their surroundings
exothermic reaction a reaction in which energy is given off with the products, usually in the form of heat or light
activation energy the amount of energy needed to get a reaction going
Created by: jpiittmann