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.

By signing up, I agree to StudyStack's Terms of Service and Privacy Policy.

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
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

science chemistry 1

8th grade

physical changes alter form or appearance
pc do physical changes change into another substance no
pc they can bend crush and tear
pc they are states of matter
chemical changes change the composition
cc - atoms are rearranged
cc they form new compounds and substances
cc they burn and rust
reactants substances that undergo the change
products new substance
chemical reactions involve changes in properties and energy that can be observed
the only evidence of a chemical reaction is that one or more new substance is formed
precipitate solid to liquid
gas bubbles
color change
exothermic rxn energy is released
endothermic rxn energy is required
chemical equations use chemical formulas to to show a rxn
chemical formulas are a combination of letter symbols to form a compound
chemical equations start and end
law of conservation of mass matter cannot be created or destroyed
synthesis taking two things and making them into one
decomposition to break apart
replacement single trade places
replacement double flip places
Created by: kerrie.reed