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

Bio 8-27

QuestionAnswer
What is an ion? An atom with a charge
What is a positively charged ion called? Cation
What is a negatively charged ion called? Anion
Where are the electrons located? Concentric circles surrounding nucleus of an atom
How many electrons can be in the first energy level? 2
How many electrons can be in the outermost energy level? 8
What is the octet rule? All atoms want to have a full valence level (typically 8 electrons)
What is electronegativity? An elements likeliness to react
Who put together much of the periodic table? Dmitri Mendeleev
How many elements are found in more than trace elements in living organisms? 12
What type of elements are found in more than trace elements in living organisms? (description) Lighter
What are te 4 most common elements found in living organisms and what percentage are they found in? O-65% C-18.5% H-9.5% N-3%
What is a group of atoms together in a stable assosiation? Molecule
What is a bond? Stable assosiation of atoms
What is a weak type of bond in which one atom takes the electrons from another one Ionic
What is a strong type of bond in which atoms share electrons? Covalent
What is a compound? Group of different atoms together
What is a chemical reaction? Making or breaking bonds
What are the things at the begining of a chemical reaction? Reactants
What are the things at the end of a chemical reaction? Products
What are 3 things that affect the rate of reaction? Catalysts, temperature, concentration
What is a biological catalyst? Enzyme
What is so important about water? Hydrogen bonds
How many possible hydrogen bonds per H2O molecule? 4
What is a hydrogen bond? bond between hydrogen and another poar element
What is a polar molecule? Molecule with partial charges
Created by: jessie4393
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