Reviewing The Atom: Question Preview (ID: 26301)

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Which best represents how electrons are arranged in the energy levels of a Lithium (Li) atom?
a) first level = 1 electron second level = 2 electrons b) first level = 2 electrons second level = 1 electron c) first level = 3 electrons second level = 0 electrons d)
Which distinguishes an atom of one element from an atom of a different element?
a) the number of protons b) the number of neutrons c) the difference between the number of protons and electrons d) the number of protons and neutrons
An element with atomic number of 16 and atomic mass of 33 has how many neutrons in each atom?
a) 16 b) 17 c) 32 d) 33
What accounts for most of the mass of an atom?
a) electrons only b) protons only c) protons and neutrons d) electrons and neutrons
Ernest Rutherford conducted an experiment using Gold (Au) foil. From his experiment he concluded which of the following?
a) An atom is mostly empty space b) Atoms are solid, hard and unbending c) Electrons have a positive charge d) There is no such thing as an atom
Which of the following best describes the current model of an atom?
a) a solid sphere with electrons and protons embedded b) a solid sphere unique for everything that exists c) a central nucleus containing protons with electrons orbiting in specific paths d) a central nucleus containing protons and neutrons with electrons orbiting in levels of high probability
Which of the following subatomic particles can be found inside the nucleus of an atom?
a) electrons only b) neutrons only c) protons and neutrons d) protons, neutrons and electrons
In looking at a model of an Oxygen atom you see that it contains 8 electrons. How many protons should it have if it is considered a stable element?
a) 6 b) 10 c) 16 d) 8
If Neon (Ne) has 10 protons in each atom. Which of the following also describes an atom of Neon.
a) It has no neutrons b) It has 10 electrons c) It has 5 neutrons and 7 electrons d) It has a total of 9 neutrons and electrons
Which statement best describes the part of an atom we refer to as the electron cloud?
a) It contains protons which are positively charged b) It contains both protons and electrons c) It contains electrons which are negatively charged d) It contains both electrons and neutrons
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