Save
Upgrade to remove ads
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
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.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
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 6 Vocab

TermDefinition
Atom Building block of matter; contains subatomic particles-neutrons, protons, and electrons.
Compound Pure substance with unique properties; formed when two or more different elements combine.
Covalent bond Type of chemical bond formed when atoms share electrons.
Electron Negatively charged particle that occupies space around an atom's nucleus.
Element Pure substance composed of only one type of atom; cannot be broken down into another substance by physical or chemical means.
Ion Atom that is negatively or positively charged because it has lost or gained one or more electrons.
Ionic bond Electrical attraction between two oppositely charged atoms or groups of atoms.
Isotope Two or more atoms of the same element having different numbers of neutrons.
Molecule Compound whose atoms are held together by covalent bonds.
Neutron Particle without a charge in an atom's nucleus.
Nucleus Center of an atom; contains neutrons and protons.
Proton Positively charged particle in an atom's nucleus.
van der Waals force Attractive forces between molecules.
Activation energy Minimum amount of energy needed for reactants to form products in a chemical reaction.
Active site Specific place where a substrate binds on an enzyme.
Catalyst Substance that speeds up a chemical reaction by reducing the activation energy.
Chemical reaction Energy-requiring process by which atoms or groups of atoms in substances are changed into different substances.
Enzyme Protein that speeds up a biological reaction by lowering the activation energy needed to start the reactio.
Product Substance formed by a chemical reaction; located on the right side of the arrow in a chemical equation.
Reactant Substance that exists before a chemical reaction starts; located on the left side of the arrow in a chemical equation.
Substrate Reactant to which an enzyme binds.
Acid Substance that releases hydrogen ions when dissolved in water; an acidic solution has a pH less than 7.
Base Substance that releases hydroxide ions when dissolved in water; a basic solution has a pH greater than 7.
Buffer Mixture that can react with an acid or a base to maintain the pH within a specific range.
Hydrogen bond Weak electrostatic bond formed by the attraction of opposite charges between a hydrogen atom and an oxygen, fluorine, or nitrogen atom.
Mixture Combination of two or more different substances in which each substance keeps its individual characteristics; can have a uniform composition (homogeneous) or have distinct areas of substances (heterogeneous).
pH Measure of the concentration of hydrogen ions in a solution.
Polar Molecule Molecule with oppositely charged regions.
Solute Substance in which another substance is dissolved.
Solution Homogeneous mixture formed when a substance (the solute) is dissolved in another substance (the solvent).
Solvent Substance in which another substance is dissolved.
Amino acid Carbon compound joined by peptide bonds; building block of proteins.
Carbohydrate Organic compound containing carbon, hydrogen, and oxygen in a ratio of one oxygen and two hydrogen atoms for each carbon atom.
Lipid Hydrophobic biological molecule composed mostly of carbon and hydrogen; fats, oils, and waxes are lipids.
Macromolecule Large molecule formed by joining smaller organic molecules together.
Nucleic acid Complex macromolecule that stores and communicates genetic information.
Nucleotide A subnit of nucleic acid formed form a simple sugar, a phosphate group, and a nitrogenous base.
Polymer Large molecule formed from smaller repeating units of identical, or nearly identical, compounds linked by covalent bonds.
Protein Organic compound made of amino acids joined by peptide bonds; primary building block of organisms.
Created by: ahindmon
Popular Biology sets

 

 



Voices

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:
Retries:
restart all cards