Save
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.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't know
Remaining cards (0)
Know
0:00
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

Biology Chapter 2

9th grade BJU Biology Chapter 2

TermDefinition
matter the physical stuff that makes up the universe
atom the basic building blocks of matter
element pure substances made of only one kind of atom
energy the immaterial stuff that gets things done - the ability to work
temperature relative hotness or coldness
enthropy the tendency of energy to disperse and become less available to do work
physical change changes that don't change a matter's identity
chemical change matter changing in a way that completely changes its identity
bond stored chemical energy that holds two atoms together
compound a pure substance made of two or more element chemically combined
molecule the smallest part of a covalent compound
dissolving the process by which one substance is broken up into smaller pieces by another substance
acid a substance that dissolves in water to form hydrogen ions
base a substance that dissolves in water to form hydroxide ions
diffusion the process by which particles in a solution are evenly distributed throughout the solvent by Brownian motion
reactant a substance that is present before a chemical reaction and takes part in it
product the substances formed during a chemical reaction
catalyst a substance that changes the rate of a chemical reaction, not affected by the reaction
enzyme a naturally occurring catalyst, usually a protein
inhibitor a substance that bins an enzyme and reduces its activity
polar quality of molecules having an uneven distribution of electrical charge
cohesion the attraction between like particles within polar substances
adhesion the attraction of particles in one substance for particles in a different substance
organic compound a covalently bonded compound containing the element carbon
carbohydrate an organic compound comprised of the elements carbon, hydrogen, and oxygen; includes sugars, starch, and cellulose
sugar a class of simple organic compounds important in living things as a source of both energy and structure
lipid a class of non-polar organic compounds that are insoluble in water
amino acids a class of organic compounds that serve as the building blocks of proteins
nucleotide a class of organic compounds that serve as the basic building blocks for the information storage molecules DNA and RNA
Created by: krisztamod
 

 



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