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

7thUnit 1 Vocabulary

7th Grade- Discovery Education Unit 1 Vocabulary

TermDefinition
Air Pressure The force that air puts on an area.
Conduction The transfer of heat energy within an object, or between objects that are directly touching each other, due to collisions between the particles in the objects.
Gas A state of matter without any defined volume or shape.
Kinetic Energy The energy an object has because of its motion
Liquid A state of matter with a defined volume but no defined shape and whose molecules roll past each other.
Matter Material that has mass and takes up some amount of space.
Mixture A combination of substances that can be physically separated from one another.
Pure Substance A material with a particular chemical makeup. Gold and silver are metal elements. Elements are made of just one type of atom.
Solid Matter with a fixed volume and shape.
Temperature A measure of the average kinetic energy of the atoms in a system, used to express thermal energy in degrees.
Thermal Energy Energy in the form of heat.
Boiling Point The temperature at which a liquid changes into a gas.
Condensation The process by which gas changes into a liquid.
Evaporation The process in which matter changes from a liquid to gas.
Freezing Point The temperature at which a liquid turns into a solid.
Melting Point The temperature at which a solid turns into a liquid.
Atom The smallest unit of an element that has all the chemical properties of that element.
Chemical Formula A set of symbols used to describe the elements within a substance.
Chemical Symbol The one- or two-letter representation of an element.
Compound A pure substance that is formed when two or more different elements combine; can usually be separated into component elements by chemical reaction.
Element A pure substance that cannot be broken down into simpler substances by chemical reactions.
Molecule Two or more atoms joined together.
Polymer A large molecule that is made of small molecules that are arranged in a repeating structure.
Popular 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