8.5(ABCD): Question Preview (ID: 24165)

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An atom's reactivity is determined by the number of
a) protons and neutrons in its nucleus.
b) electrons and protons in its nucleus.
c) electrons in its outer shell.

If an atom has 1 valence electron, how many more electrons would be needed to fill the outer shell
a) 7
b) 6
c) 5
d) 0

The mass number of Carbon represents the total number of
a) protons
b) neutrons
c) protons plus neutrons
d) protons minus neutrons

Protons are located in the
a) electron cloud
b) outside the electron cloud and nucleus
c) in the nucleus
d) on the edge of the atom

The charge of a proton is
a) positive
b) negative
c) neutral

The charge of a neutron is
a) positive
b) negative
c) neutral

Electrons have a ____________ charge.
a) positive
b) negative
c) neutral

The nucleus of an atom has a ______________ charge
a) positive
b) negative
c) neutral

The electron cloud of an atom would have a _________ charge.
a) positive
b) negative
c) neutral

Which of these is true about an atom?
a) Protons weigh more than electrons
b) The electron cloud has a larger mass than the nucleus
c) Atoms contain only two subatomic particles, protons and neutrons
d) All atoms contain the same number of valence electrons

WWhich subatomic particles have no effect on the net charge of an atom?
a) Protons only
b) Neutrons only
c) Electrons only
d) Protons and electrons

Which of these could cause an atom to become LESS reactive?
a) Gaining electrons in its nucleus
b) Gaining protons
c) Losing neutrons from its electron cloud
d) Losing electrons from its outer most shell

Which of these best describes an atom with 8 valence electrons?
a) HIghly reactive
b) Reactive
c) Non-reactive

Which of these atoms would be most reactive?
a) An atom with 1 valence electron
b) An atom with 8 valence electrons

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