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

Atoms and moles

vocab words from p.73-88

law of definite proportions states that 2 samples of a given compound are made of the same elements in exactly the same proportions by mass regardless of the sizes or sources of the samples
law of conservation of mass the mass of the reactants in a reaction = the mass of the products
law of multiple proportions if 2 or more different compounds are composed of the same 2 elements
electron a subatomic particle that has a negative charge
nucleus in physical science, an atom's central region, which is up of protons and nutrons
proton a subatomic particle that has a positive charg and that is found in the nucleus of the atom
neutron a subatomic particle that has no charge
atomic number the number of protons in the nucleus of an atom; the atomic number is the sames for all atoms of an element
mass number the sum of the numbers of protons and neutrons in the and that is found in the nucleus of an atom
isotope atoms of the same element that have different numbers of neutrons
Created by: pergasha15