True and false question. If false what are the answers? ( ) this is the word for true or false?

1. radioactive isotopes that are put into the body to monitor a bodily process are called (tracers)?





2. the amount of material left after two half lives is (one half) of the original amount?





3. a (cloud chamber) is a tube filled with a low pressure gas with a charged wire running through its center.





4. (Ionizing radiation) can be given internally or externally.





5. (Fusion) means ';to divide';.True and false question. If false what are the answers? ( ) this is the word for true or false?
True


False


False (my problem with that is a cloud chamber is not a tube, but more of a real chamber)


True


False

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