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


Atom The smallest unit of matter.
Element A substance that is made up of one type of atom.
Molecule 2 or more atoms of different elements bonded together.
Compound 2 or more elements bonded together.
Atomic number The number of protons in the nucleus of an atom.
Mass number The total number of protons and neutrons in a nucleus.
Atomic weight The mass of an atom.
valence electron An electron located on the outermost shell of an atom.
Electron A subatomic particle with a negative charge .
Proton A subatomic particle with a positive charge .
Neutron A subatomic particle with no charge.
Isotope An element that has the same number of protons but different amount of neutrons.
Radioisotope Several species of the same chemical element with different masses.
Electron configuration The distribution of electrons of an atom or molecule
Bond When 2 of the same atoms bond with a different atom and share electrons.
Polar bond A chemical bond where a pair of electrons is unequally shared between 2 atoms.
Nonpolar bond A chemical bond where a pair of electrons is equally shared between 2 atoms.
Hydrogen bond A weak bond between two molecules.
Solvent A molecule that has the ability to dissolve other molecules.
Solution A mixture of solvent and solute molecules.
Solute A substance that can be dissolved by a solvent to create a solution.
Hydrophobic A molecule that doesn't affiliate with water and doesn't dissolve in it.
Hydrophilic A molecule that dissolves easily with water.
Amino acid An organic molecule that is made up of a basic amino groups.
Nucleotide One of the structural components of DNA and RNA.
Peptide bond A chemical bond formed between two molecules when the carboxylic group of
Lipid A nonpolar molecules that include fat, oils, and waxes .
Saturated fat A type of fat containing a high proportion of fatty acid molecules
Saccaride A monosaccharide sugar or combination of sugars
Specific heat (water) The amount of heat one gram of a substance must absorb or lose to change its temperature
Created by: lduransalin9228
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