Busy. Please wait.
Log in with Clever

show password
Forgot Password?

Don't have an account?  Sign up 
Sign up using Clever

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.
Your email address is only used to allow you to reset your password. See 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.
Didn't know it?
click below
Knew it?
click below
Don't Know
Remaining cards (0)
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


Chapter 3

Valence electron an electron that is found in the outermost shell of an atom andthat determines the atom's chemical properties
Chemical bond the ATTRACTIVE force that holds atoms or ions together
Compound a substance made of the ATOMS of TWO or more different ELEMENTS joined by CHEMICAL BONDS
Covalent bond a bond formed when ATOMS share ONE or more PAIRS OF ELECTRONS
Molecule a GROUP OF ATOMS HELD TOGETHER by CHEMICAL forces, a SMALLEST UNIT OF MATTER that can exist by itself and retain al of a substance's chemical properties
Ion an atom or GROUP OF ATOMS that was an electric charge because it has GAINED OR LOSTED ELECTRONS
Hydrogen bonding can play an important role in many of the molecules that MAKE UP LIVING THINGS
Latent heat can cut organisms maintain a constant internal temperature
Cohesion the force that holds molecules of a single material together
Adhesion the attractive force between two bodies of different substances that are in contact with each other
Solution a homogeneous mixture throughout which two or more substances are uniformly dispersed
pH a value that is used to express the acidity of a system
Buffer a solution made from a weak acid and its conjugate base that neutralize small amounts of acids added to it
Base any compound that increase the number of hydroxide ion when dissolved in water
Acids any compound that increase the number of hydronium ions when dissolved in water
Carbohydrates a class of molecules that are mode of sugars
Lipid a fat molecules that has the similar properties
Protein an compound made of one or more chains of amino acids
Amino acid a compound of a class of simple compounds
Nucleic acid a long chain of nucleotide units
Nucleotide a molecule made up of three parts
DNA the material that contains the information that determines inherited traits
RNA all living cells that plays a role in protein sythesis
ATP the main source for cell processes
Enzyme a molecule that acts as a catalyst in reactions
Atom the smallest unit of matter
Element a substance that cannot be separated into simpler substances by chemical means
Energy The capacity to do work
Reactant A substance or molecule that participates in a chemical reaction
Product A substance that forms in a chemical reaction
Activation energy The minimum amount of energy required to start a chemical reaction
Substrate The reactant in reactions catalyzed by enzymes
Active site The site that attaches to a substrate on an enzyme
Created by: Victoria718
Popular Biology sets




Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
restart all cards