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

Nuclear Chem Quiz

Radioactivity The spontaneous emission of rays of particles from certain elements. (i.e. uranium)
Nuclear Radiation The rays and particles emitted from a radioactive source
Nuclear vs. Chemical Reactions Chemical reactions start and end with stable atoms. Nuclear reactions begin with unstable radioisotopes that undergo changes in their nucleus to make them more stable.
Alpha Radiation Occurs when radioisotopes give off a helium nucleus
Alpha Radiation Symbol 4/2 He
Beta Radiation Occurs when a neutron changes into a proton and a fast moving electron
Beta Radiation Symbol 0/-1 e
Gamma Radiation Gamma rays have no mass or charge, so they do nothing to the mass or atomic # of an atom
Gamma Radiation Symbol 0/0 Y
Band of Stability A graph that shows the Proton to Neutron ratios of all stable isotopes
How many known stable isotopes are there? About 250
P:N ratio for elements with under 40 protons 1:1
P:N ratio for elements with more than 40 protons 1:1.5
Decay series An unstable isotope will continue to undergo decay until it becomes a stable isotope
Half-life The time it takes for half of a radioactive sample to decay into another isotope
Nuclear Fission The splitting of a nucleus into smaller pieces and energy is released
When does Nuclear fission occur? When the nucleus of some isotopes are bombarded with neutrons
Fission of Uranium-235 The fission of 1kg of U-235 gives off the same amount of energy as the explosion of 20,000 tons of dynamite
What happens in an uncontrolled nuclear chain? All the energy is released in a fraction of a second
Nuclear Fusion The process of combining nuclei to make a nucleus of greater mass; energy is released
Created by: MLevy44