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.

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

Chem I Exam 2/25/10

Heat Quantity of Energy
Temperature A degree of hotness or coldness
Specific Heat amount of heat required to raise the temperature of 1g of a substance by 1degree Celcius or 1K
Elements Made up of atoms
Atoms smallest of an element
Compounds Two or more elements chemically united
Molecule Smallest part of a compound
Compounds and Molecules are represented how? Formulas
Law of Constant Composition different samples of a pure compound will always contain the same elements in the same percent by weight
Empirical Formula Indicates the elements to present in their ratio
Molecular Formula indicates the elements to present in their exact numbers
Structural Formula Indicates the elements present in their exact numbers and shows structure and bonding
Democrates developed idea of atoms
Atomic Number Number of proton in the nucleus
Atomic Mass sum of protons and neutrons
Isotope two or more atom of the same element that contain different numbers of neutrons therefore differ in atomic mass
Atomic Mass on Periodic Table weighted average of all isotopes
Quark smallest particle
Who came up with Quark? Murray Gell-mann
What are the 3 pairs of Quark called? Up/Down Top/Bottom Strange/Charmed
In Protons..how many Ups/Downs? 2Up/1Down
In Neutrons...how many Ups/Downs? 1Up/2Downs
Bohrs Theory 1.The nucleus is sorrounded by e- at definite circular orbits.2. Because of their position and momentum the e- passes energy3.the shell(energy state) closest to the nucleus is N=1. This is the lowest energy4. The max # of e- at any shell e-=2(N)sq
Subshells S=2e-P=6e-D=10e-F=14e-
Heisenburg Uncertainity Principle It is impossible to determine the position and momentum of an e- simultaneously
Hunds Rule e- will fill all configurations singly before paring occurs
Pauli Exclusion Principle No 2 e-'s in any single atom can have the same set of 4 quantum numbers1.shell N=1,N=22.subshell S,P,D,F3.configuration Px,Py,Pz4.spin +,-
Density formula D= M/V
Volume Formula V= V/D
Mass formula M= VxD
Specific Gravity Density of Substance/Density of H2O in same units
○F to ○C Formula 5/9(○F-32)
○C to ○F Formula 9/5○C+32
○C to K ○C+273
K to ○C 273-○C
Calories Formula (mass)(sp.heat)(Ti-Tf)
Heat Transfer Formula (mass)(sp. heat)(Ti-Tf)=(mass)(sp. heat)(Ti-Tf)
Created by: cyclguy