Save
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
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. Your email address is only used to allow you to reset your password. See 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.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
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 Ch 9- JWit

Nuclear Changes

QuestionAnswer
process where an unstable nucleus emits one or more particles or energy in the form of electromagnetic radiation radioactivity
particles that are released from the nucleus during radioactive decay nuclear radiation
positively charged atom that is released in the disintegration of radioactive elements and that consists of two protons and two neutrons alpha particles
charged electron emitted during certain types of radioactive decay, such as beta decay beta particle
high-energy photon emitted by a nucleus during fission and radioactive decay gamma ray
time required for half of a sample of a radioactive substance to disintegrate by radioactive decay or by natural processes half-life
process by which a nucleus splits into two or more fragments and releases neutrons and energy fission
a continuous series of nuclear fission reactions nuclear chain reaction
the minimum mass of a fissionable isotope that provides the number of neutrons needed to sustain a chain reaction critical mass
the process in which light nuclei combine at extremely high temperatures, forming heavier nuclei and releasing energy fusion
the nuclear radiation that arises naturally from cosmic rays and from radioactive isotopes in the soil and air background radiation
quantity of ionizing radiation that does as much damage to human tissue as 1 roentgen of high-voltage x rays does rems
radioactive material that is added to a substance so that its distribution can be detected later radioactive tracers
treatment that uses controlled doses of nuclear radiation for treating diseases radiotherapy
produced by the radioactive decay of uranium-238 present in soil and rocks radon gas
discovered the element radium, which was later found to emit gamma rays Marie Curie
consists of matter that is emmitted from an unstable nucleus neutron emission
Showed that alpha particles are helium nuclei by trapping alpha particles from radon-222 decay in a glass tube Ernest Rutherford
first discovered nuclear fission Hahn and Strassman
magnetic resonance imaging MRI
alpha, beta, gamma, and X-rays can change the number of electrons in atoms in living materials ionization
Created by: dltn_petrysz
Popular Physical Science sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards