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.

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
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

Wk 3 Vocab

OBHS Biology

QuestionAnswer
Element substance consisting entirely of one type of atom (Ex: oxygen)
Isotope atom of an element that has a number of neutrons different from that of other atoms of the same element (Ex: Carbon 14)
ionic bond bond formed when one or more electrons are transferred from one atom to another (Ex: NaCl)
covalent bond bond formed by the sharing of electrons between atoms. (Ex: H20)
Molecule smallest unit of most compounds
Buffer weak acid or base that can react with strong acids or bases to help prevent sharp, sudden changes in pH
activation energy energy needed to get a reaction started
enzyme protein that acts as a biological catalyst
cohesion attraction between molecules of the same substance
adhesion attraction between molecules of different substances; in plants, attraction between unlike molecules
ion atom that has a positive or negative charge
pH scale measurement system used to indicate the concentration of hydrogen ions (H+) in solution; ranges from 0 to 14
Created by: ARhymer