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1. What is an isotope? 2. What does the number next to isotopes signify? 3. How can you tell isotopes of the same element apart?

1. What is an isotope? 2. What does the number next to isotopes signify? 3. How can you tell isotopes of the same element apart?

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Isotopes The number of protons in a nucleus determines the identity of the element. For example, any atom having 6 protons will be a "carbon" atom. If we were to add an extra proton to the nu- cleus, we would have an entirely different element. For example, C (6 protons) +1 proton → N (7 protons) On the other; hand, if we add an extra NEUTRON to a nucleus we simply end up with the same element, just a little heavier, since the charge on the nucleus would be unchanged. ISOTOPES of a given element have the same ATOMIC NUMBER but a different ATOMIC MASS. In other words, isotopes have the same number of protons but a different number of neutrons. An isotope is identified by its mass number, the sum of the protons and neutrons. The most common isotope of Carbon has a mass number of 12 and can be written as Carbon-12, two other isotopes are Carbon-13 and Carbon-14. Despite their different mass umbers, all three carbon isc react the same way chemically. PART I. Answer the questions based on the above reading. 1. What is an isotope? 2. What does the number next to isotopes signify? 3. How can you tell isotopes of the same element apart? K
Transcribed Image Text:Isotopes The number of protons in a nucleus determines the identity of the element. For example, any atom having 6 protons will be a "carbon" atom. If we were to add an extra proton to the nu- cleus, we would have an entirely different element. For example, C (6 protons) +1 proton → N (7 protons) On the other; hand, if we add an extra NEUTRON to a nucleus we simply end up with the same element, just a little heavier, since the charge on the nucleus would be unchanged. ISOTOPES of a given element have the same ATOMIC NUMBER but a different ATOMIC MASS. In other words, isotopes have the same number of protons but a different number of neutrons. An isotope is identified by its mass number, the sum of the protons and neutrons. The most common isotope of Carbon has a mass number of 12 and can be written as Carbon-12, two other isotopes are Carbon-13 and Carbon-14. Despite their different mass umbers, all three carbon isc react the same way chemically. PART I. Answer the questions based on the above reading. 1. What is an isotope? 2. What does the number next to isotopes signify? 3. How can you tell isotopes of the same element apart? K
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