Chapter 11 Multiple Choice Quiz 1

Please answer all questions


1	An atom is the
		A)	smallest unit of an element that can exist alone.
		B)	smallest particle that participates in chemical bonding.
		C)	unit with equal numbers of protons and neutrons.
		D)	unit with unequal numbers of electrons and protons.


2	Ozone is a form of oxygen that is
		A)	monatomic.
		B)	diatonic.
		C)	triatomic.
		D)	tetratomic.


3	Chemical energy is stored within molecules as
		A)	thermal energy.
		B)	internal activation energy.
		C)	internal potential energy.
		D)	kinetic energy of the nucleus.


4	The outer electrons of an atom that participate in chemical bonding are referred to as what kind of electron?
		A)	reactant.
		B)	valence.
		C)	net.
		D)	product.


5	Which of the following represents the most stable outer orbital arrangement of electrons after a chemical reaction?
		A)	1 electron.
		B)	3 electrons.
		C)	6 electrons.
		D)	8 electrons.


6	The element sodium (Na) has how many valence electrons?
		A)	1
		B)	2
		C)	7
		D)	8


7	In a chemical reaction the element sodium (Na) will
		A)	lose an electron.
		B)	lose two electrons.
		C)	gain an electron.
		D)	neither gain nor lose electrons.


8	Ionic bonds are formed when
		A)	electrons are transferred from the excited to the ground state.
		B)	electrons are transferred from the ground to the excited state.
		C)	electrons are transferred between atoms.
		D)	atoms share electrons.


9	Covalent bonds are formed when
		A)	electrons are transferred from the excited to the ground state.
		B)	electrons are transferred from the ground state to the excited state.
		C)	electrons are transferred between atoms.
		D)	atoms share electrons.


10	The number of atoms in a molecule of ammonium sulfate, (NH₄)₂SO₄, is
		A)	4.
		B)	10.
		C)	14.
		D)	15.

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