Lecture 3 Questions

Lecture 3 Questions - 1. Define atomic number, mass number,...

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1. Define atomic number, mass number, and atomic mass. What elements are represented by the chemical symbols: C, H, O, N, S, P, Na, K, Cl, Ca, Fe, Mg, Cu, B.? Atomic number: amount of protons in an atom. Mass number: The sum of protons and neutrons Atomic mass: Total mass of an atom, which is the mass in grams of one mole of the atom. C – Carbon, H – Hydrogen, O – Oxygen, N – Nitrogen, S – Sulfur, P – Phosphorus, Na – Sodium, K – Potassium, Cl – Chlorine, Ca- Calcium, Fe – Iron, Mg- Magnesium, Cu – copper, B – Boron 2. What are isotopes and radioisotopes? What are the three naturally occurring isotopes of carbon? Which isotope is most common and which isotope is radioactive? Isotopes are atoms with the same atomic number (number of protons) but different mass numbers (varying amounts of neutrons) Radioactive Isotopes lose energy and mass when their nucleus decays. Carbon 12, 13, and 14.
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Lecture 3 Questions - 1. Define atomic number, mass number,...

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