Save
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

Science Midterm revi

TermDefinition
protons positively charges particles
quarks the substances that protons are made up out of
neutrons negatively charged particles
elements pure substances that cannot be separated
compounds pure substances the are composed of two or more different elements joined by chemical bonds.
mixture a combination of two or more pure substances that are not chemically combined
heterogenous can see all the parts
homogeneous cannot see all the parts
physical changes changes that only change the physical properties
chemical changes the formation or one or more new substances with new chemical and physical properties
chromosomes the structures in a cell that contain the DNA inside
bases the pairs that a double helix is made of
double helix the structure of DNA
genotype the set of genes carried by the organism
phenotype the physical expression of the genes
dominant a trait that will always be expressed in the phenotype
recessive a trait that will only be expressed in the phenotype if two recessive alleles are present
Created by: 12363
Popular Earth Science 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