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

Maggie Warren :D

Chemistry Study Guide Chapter 3/21

Gamma rays are? Electromagnetic waves
As the mass number of isotopes of an element increases, the nuber of preotons? Remains the same
An atom of potassium has 19 protons and 20 neutrons. What is its mass number? 39
What are often used to monitor the approximate radiation exposure of people working with radioactive materials? Film Badges
The forces that hold the particles in the nucleus together are called? Nuclear forces
The discovery of the electron resulted from expirements using? Cathode rays
Which instrument detect radiation by counting electric pluses carried by ionized gas atoms? Geiger-Muller counters
All atoms of the same element have the same? Atomic number
How many significant digits are in 50.00000? 7
In a glass tube, electrical current passes from the negative electrode, called the _______ to the other electrode. Cathode
Created by: maggie warren