As You and a Friend Are Entering a Chemistry Laboratory

question 38

Multiple Choice

As you and a friend are entering a chemistry laboratory at your university,you see a sign that states: DANGER-RADIOACTIVE ISOTOPES IN USE.Your friend is an accounting major and has not had any science courses yet.She asks you what a radioactive isotope is and you respond correctly with:

• A)Radioactive isotopes are atoms that are unstable and as a result emit energy in a process called radioactive decay.
• B)Radioactive isotopes are atoms that are stable and as a result emit energy in a process called radioactive decay.
• C)Radioactive isotopes are atoms that are stable and as a result only emit energy if they are exposed to higher temperatures.
• D)Radioactive isotopes are atoms that are unstable but unless actively disturbed by some chemical process will remain intact and pose no problems.

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