Busy. Please wait.

Forgot Password?

Don't have an account?  Sign up 

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 email address associated with your account, and we'll email you a link to reset your password.

Remove ads
Don't know (0)
Know (0)
remaining cards (0)
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

Science Vocab

The Law of Conservation of Mass States that mass is neither created nor destroyed in any ordinary chemical reaction.
Physical change Physical changes are changes affecting the form of a chemical substance, but do not change the chemical composition of that substance.
Chemical changes Chemical changes occur when a substance combines with another to form a new substance, called synthesis or, alternatively, decomposes into two or more different substances.
Element One of a class of substances that cannot be separated into simpler substances by chemical means. See also chart under periodic table.
chemical formula A chemical formula or molecular formula is a way of expressing information about the atoms that constitute a particular chemical compound.
element (diatomic) molecule Diatomic molecules are molecules composed only of two atoms, of either the same or different chemical elements.
compound molecule 2 types of molocules put togather to make a compound molecule.
chemical equation A chemical equation is the symbolic representation of a chemical reaction where the reactant entities are given on the left hand side and the product entities on the right hand side.[
chemical reaction A chemical reaction is a process that leads to the transformation of one set of chemical substances to another.[
Reactants H2O(s) ® H2O(l) . . . melting
products Reactants→Products SnO2 + H2 → Sn + 2 H2O
Coefficient The number of molecules of reactants or products. 2 H2 + O2 > 2 H2O
Subscript Subscripts are numbers used to tell you how many atoms of an element are present in the equation. water H20 has 2 atoms of hydrogen and one of oxygen • glucose C6H12O6 has 6 atoms of carbon, 12 of hydrogen, and 6 of oxygen
Created by: b0404058