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Question 11.What does the atomic number represent?
Question 22.Which of the following sets of quantum numbers CAN exist?
Question 33.ALL atoms of the same element have:
Question 44.Magnesium has three common isotopes. Based on its average atomic mass, which is the most common?
Question 55.Why did Democritus disagree with Aristotle?
Question 66.The mass number indicates:
Question 77.What should the electron configuration for neon (Ne) end with? Is it going to be a stable atom or a reactive atom?
Question 88.A tenth of a mole of pennies contains how many pennies?
Question 99.The average atomic mass or atomic weight found on the periodic table is _____.
Question 1010.Particles that are found in the atomic nucleus are:
Question 1111.Which is the symbol for the element that contains six electrons in each of its neutral atoms?
Question 1212.How many neutrons does the most common isotope of hydrogen have?
Question 1313.A piece of copper wire contains 5 moles of copper atoms. What is its mass?
Question 1414.A piece of pencil graphite (made of carbon atoms) has a mass of 0.12 grams. How many moles of carbon atoms are in the lead?
Question 1515.An element is defined by the number of:
Question 1616.The nucleus of an atom:
Question 1717.Which element has a mass number of 12 and contains 6 neutrons?
Question 1818.X and Y are elements that are isotopes to each other. Which of the following is true about X and Y?
Question 1919.A computer chip contains 1.20 x 10^23 atoms of silicon. What is its mass?
Question 2020.The Bohr model of the atom:
Question 2121.Who first coined the term atom, meaning indivisible?
Question 2222.What did Rutherford discover in his gold foil experiment?
Question 2323.What is the principal quantum number for the last electron that is added to potassium?
Question 2424.Which scientist is credited with discovering the charge of an electron?
Question 2525.Which of the following has a positive charge and a mass of one?
Question 2626.Which letter orbital corresponds to l = 2?
Question 2727.Which block is manganese (Mn) located in?
Question 2828.Which of the following was the instrument used for the discovery of the electron?
Question 2929.A piece of aluminum foil has a mass of 27 grams. About how many atoms does this contain?
Question 3030.If Atom #1 has 19 protons and 22 neutrons, and Atom #2 has 20 protons and 22 neutrons, are these isotopes of the same element?
AP Chemistry: Atomic Structure: Help and Review Chapter Exam Instructions
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