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.

By signing up, I agree to StudyStack's Terms of Service and Privacy Policy.

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.

Remove ads
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


7th grade science

What is a substance? It is matter that has a fixed composition.
What is an element? An example of pure substance.
What can change a substance into one or more different substance? A chemical process such as burning or reacting with other chemicals.
What is a mixture? A combination of substances that aren't bounded together and can be seperated by physical process.
What is a solution? Two or more substances evenly mixed on a molucular level but not bonded together. (AKA homogenous).
What is a Solute? The substance that disssolves in a solution.
What is the solvent? The substance that dissolves the solute.
What is percipitate? A solution that falls out of solutions.
Solutions can be made of different ____________ of solid liquids and gases. Combinations = ____________
In a ______ solution the solute can be another liquid solid or gas. Liquid = _______
Salt water and suger water are ____________ solutions. Liquid-solid = ____________
Carbinated beverages are __________ solutions. Liquid-gas = ___________
Viniger is a _____________ solution made of water and acetic acid. Liquid-liquid = _____________
What is Alloy? A solid-solid solution made from two or more metals, (sometimes nonmetal elements are included in an alloy.)
What is brass? An alloy of copper and zinc.
What is steel? An alloy of iron and carbon, which makes the steel stronger and more flexible.
Created by: Muhaimen