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

Matter and Energy 2

Unit 1 Matter and Energy Part 2

Pure Substances A material that is composed of only one type of particle, whether it be an atom or molecule.
Physical Change A change from one state (solid, liquid, gas, or plasma) to another without a change in chemical composition.
Chemical Change A process where chemical bonds are broken and new bonds are formed between different atoms.
Conservation of Energy A principle stating that energy cannot be created nor destroyed, but can be altered from one form to another.
Conservation of Matter A fundamental principle of classical physics that matter cannot be created or destroyed in an isolated system, but can only change form.
Heat Flow The amount of heat transferred.
Reactivity The tendency of a substance to undergo chemical reaction, either by itself or with other materials, and to release energy.
Conbustibility A measure of how easily a substance will set on fire.
Precipitate To cause (a substance) to be deposited in solid form from a solution.
Potential Energy The energy of a particle or system of particles derived from position, or condition, rather than motion. (stored energy)
Kinetic Energy The energy possessed by a body because of its motion, equal to one half the mass of the body times the square of its speed. (energy in motion)
Chemical Reaction Interaction of two or more chemicals that produces one or more new chemical compounds, or alters the properties of the original substances.
Heat The form of energy that flows between two samples of matter due to their difference in temperature.
Substances A particular kind of matter with uniform properties.
Homogeneous Uniform in structure or composition throughout.
Heterogeneous Consisting of dissimilar elements or parts; not homogeneous.
Created by: lcrowe