science cards stuff Word Scramble
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Question | Answer |
define radioactivity | The process by which an unstable nucleus gives off nuclear radiation. |
define Mass Number | The sum of the numbers of protons and neutrons. in the nucleus of an atom. |
What is Radioactivity also called? | Radioactive Decay. |
What is an Isotope? | A isotope is an atom that has the same number of protons as the other atoms of the same element do but that has a different number of neutrons. |
what can stop Alpha particles? | Paper |
What can stop Beta particles? | Aluminum |
What can stop Gamma Rays? | A few centimeters of lead or a few meters of concrete. |
What is a half-life? | The time needed for half of a sample of radioactive substance to undergo radioactive decay. |
What causes the most damage to you? | Alpha Particles |
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