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
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

chemical and physical changes

QuestionAnswer
what occurs when two or more molecules interact and molecules change into a new substance. chemical reaction
what changes the form or appearance of a substance but does not change the substance into anything new. physical change
when two or more substances join to form new substances with new chemical properties. chemical change
new molecules created in a chemical reaction radiate light differently producing new color. unexpected color change
during chemical bonding energy is released or absorbed making their surroundings hotter or cooler. unexpected temperature change
gorllllllllllll combustion/burning
when a solid suddenly appears in a solution and settles to the bottom or makes the solution cloudy. precipitates forms
when gases produced in a chemical reaction are released. bubbles
Created by: allystudystack