Matter 5: Question Preview (ID: 7963)

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What scientist organized the periodic table that we currently use?
a) Dmitri Mendeleev b) Henry Moseley c) Democritus d) Neils Bohr
Why is it called the
a) Each of the element sybols is followed by a period. b) Elements in the columns of the table have a repeating pattern. c) Periodically, the number of elements and symbols on the table change. d) Elements in the rows have show a repeating pattern of properties.
How many elements are listed on the most current periodic table?
a) 75 b) 103 c) 115 d) 118
What do all of the elements in Group 1 have in common?
a) They are all solids at room temperature. b) They are all metals. c) They all have an equal number of protons and neutrons. d) They all have one valence electron.
What is the unit for measuring the atomic mass?
a) kg b) g c) u d) lb
What is the name for the elements in group 17?
a) Alkali Metals b) Lanthanides c) Halogens d) Alkali Earth Metals
What do the elements in the 3rd row of the period table all have in common?
a) similar chemical properties b) same number of valence electrons c) electrons at the same outmost energy level d) Trick Question - they have nothing in common
How is the chemical symbol for an element determined?
a) They are assigned alphabetically in the order they were discovered. b) The first letter or two of last name of the scientist who discovered the element. c) The letters are picked at random by a committee of scientists. d) The first letter or two of the chemical name.
Mark is reading in his science textbook and comes across a notation for an element: C-14. Which of the following is NOT something he can conclude from reading this notation?
a) What state of matter it is in at room temperature b) How many electrons are in a neutral atom c) The number of protons and neutrons in the nucleus d) What element it is an isotope of
Why does Carbon come before Nitrogen on the periodic table?
a) Carbon (C) comes alphabetically before nitrogen (N). b) Carbon has a lower average atomic mass than nitrogen. c) Nitrogen has one more neutron than carbon. d) Nitrogen has one more proton than carbon.
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