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What are the differences between Carbon-12 and Carbon-14?
Carbon-12: 6 neutrons, most abundant, stable | Carbon-14: 8 neutrons, rare, radioactive.
What are the differences between atomic number and atomic mass?
Atomic Number: Number of protons, defines the element | Atomic Mass: Weighted average of isotope masses.
What happens when an atom has more neutrons?
It becomes an isotope with a different atomic mass.
What happens when a sample is run through a mass spectrometer?
A mass spectrum is produced, showing the mass and relative abundance of each isotope.
What are the steps to calculate average atomic mass?
- Convert percentages of abundance to decimals. 2. Multiply each isotope's mass by its decimal abundance. 3. Sum the results.
How do you identify an element using a mass spectrum?
- Calculate the AAM from the mass spectrum. 2. Look at the periodic table to find the element with a close AAM.