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Unformatted text preview: 1. What defines the element to which a particular atom belongs? Student Response Value Correct Answer Feedback 1. The number of protons in the nucleus. 100% Correct! 2. The number of protons plus the number of neutrons in the nucleus 0% 3. The number of protons plus the number of electrons plus the number of electrons. 0% 4. The number of neutrons in the nucleus. 0% 5. The number of electrons orbiting around the nucleus. 0% General Feedback: Elements are defined by the number of protons in the nucleus. Score: 1/1 2. An isotope has a half-life of 13 years. If there is a 3 gram lump of this isotope, how much of the isotope will remain after a period of 52 years? General Feedback: There were 3 grams initially with a hald life of 13 years. After 13 years, 1/2 of the 3 grams decay away, so there There were 3 grams initially with a hald life of 13 years....
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This note was uploaded on 04/28/2008 for the course BIO 105 taught by Professor Mickle during the Spring '07 term at N.C. State.
- Spring '07