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

Ch. 15


Substance a type of matter with a fixed compositions.
Element A substance with the same atoms
Compound A substance in which the atoms of two or more elements are combined in a fixed proportion
Heterogeneous Mixture A mixture in which different materials can be distinguished easily
Homogeneous Mixture Contains two or more gaseous, liquid, or solid substances blended evenly throughout.
Solution A homogeneous mixture of particles so small they cannot be seen with a microscope and will never settle to the bottom their container
Colloid A type of mixture with particles larger than those in solutions but not heave enough to settle out.
Tyndall effect The scatter of light by colloidal particles
Suspension A heterogenous mixture containing a liquid in which visible particles settle.
Physical property Any characteristic of a material that you can observe without changing the identity of the substances that make up the material.
Physical change A change in size, shape, or state of matter.
Distilation The process for separating substances in a mixture by evaporating a liquid and recondensing its vapor
Chemical property A characteristic of a substance that indicates whether it can undergo a certain chemical change.
Chemical change A change of one substance to another.
Law of Conservation of mass The mass of all substances that are present before a chemical change equals the mass of all the substances that remain after the change.
Created by: airiktorrescruz