Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

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.
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.
Don't know
remaining cards
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards
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

Unit 1, Lessons 1-6

Matter Anything that has mass and takes up space.
Mass Describes the amount of matter in an object.
Weight A measure of the gravitational force on an object.
Volume The amount of space that an object takes up.
Density A measure of the of mass in a given volume.
Physical Property A characteristic of a substance that can be observed and measured without changing the identity of the substance.
Chemical Property Describes a substances ability to change into a new substance with different properties.
Physical Change A change that affects one or more physical properties of a substance.
Chemical Change Occurs when one or more substances change into entirely new substances with different properties.
Law of conservation of mass States that an ordinary chemical and physical changes.
Atom The smallest unit of an element that maintains the properties of that element.
Element Made up of one or more of the same kind of atom chemically combined.
Compound Made up of different kinds of atoms chemically combined.
Mixture Contains a variety of elements and compounds that are not chemically combined with each other.
Pure Substance Elements and Compounds.
Hetrogeneous A heterogeneous mixture is one that does not have a uniform composition.
Homogeneous Describes something that has a uniform structure or composition throughout.
Solid A substance has a definite volume and shape.
Liquid A substance has a definite volume but not a definite shape.
Gas Does not have a definite volume or shape.
Feezing The change in state in which a liquid becomes a solid.
Melting The change of state from a solid to a liquid.
Evaporation When some particles gain enough energy that they escape from the surface of the liquid and become a gas.
Boiling A rapid change from a liquid to a gas, or vapor.
Condension The change of state form a gas to a liquid.
Sublimation The change from a solid state directly into a gas.
Depositioin The change in state from a gas directly to a solid.