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

ScienceChapter 18

Science Notes Chapter 18

TermDefinition
Atom The smallest part of an element that retains properties of that element.
Element A pure substance that cannot be separated into simpler substances.
Pure Substance Substance made of only one type of particle.
Molecule Two or more atoms combined in a fixed ratio.
Metals Shiny, good conductors of electricity and heat, malleable and ductile.
Nonmetal Dull, poor conductors of electricity and heat, brittle, unmalleable.
Metalloids semiconductors; properties of both metals and non-metals.
Compound Pure substance composed of two or more elements chemically combined, one particle of a compound is a molecule. Can be broken down into simpler compounds or elements through chemical change.
Subscripts Used to indicate the number of atoms in a molecule (or compound).
Sodium Poisonous, explosive, not naturally occurring, solid, soft metal.
Chlorine Poisonous, gas, purification, naturally occurring.
Mixture A combination of two or more substances that are not chemically combined.
Homogeneous Uniform dispersion Evenly mixed
Heterogeneous Non-uniform dispersion Non-evenly mixed
Solution A homogeneous mixture that appears to be a single substance. Particles are evenly distributed.
Solvent Water is known as the universal solvent. Most solvents are liquid. Unable to dissolve; will not form solutions.
Solute Able to dissolve; will form solutions.
Created by: Jdogcougar
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