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Matter, Atomic Structure, Chemical Bonding
Test Description: CYB 17-18 Chem Test 1
Instructions: Answer all questions to get your test result.
1) Atoms of the noble gases are generally inert because —
A
they are too large to react
B
their outer electron levels are filled
C
they are not charged
D
they are neutral atoms
2) What are shared in covalent bonds?
A
Protons
B
Cations
C
Anions
D
Electrons
3) Chlorine has atomic number 17 and mass number 35. It has
A
18 protons, 18 electrons, and 17 neutrons.
B
35 protons, 35 electrons, and 17 neutrons.
C
17 protons, 17 electrons, and 18 neutrons.
D
17 protons, 17 electrons, and 52 neutrons.
4) The chemical symbol for iron is _____.
A
ir
B
Fe
C
fe
D
FE
5) What makes the outer shell electrons important is that they
A
are not really important so they can be lost easily.
B
tell you what element you're dealing with if you only know how many electrons are in the outer shell
C
determine the chemical reactivity of the atom.
D
will always seek out atoms that have the same number of outer shell electrons
6) All of the noble gases have this fact in common:
A
They are all very common and can be found easily in nature
B
Their outer shells are full of electrons
C
They are all radioactive
D
They will react chemically with other elements quite easily
7) Which of these elements have atoms that do not have two electrons in their outer shells?
A
Calcium
B
magnesium
C
lithium
D
berylium
8) When an atom manages to get its outer energy level filled with electrons the atom becomes
A
unstable
B
More reactive
C
non-reactive
D
new elemen
9) Ionic bonds form when electrons are-
A
transferred
B
magnetized
C
shared
D
ionized
10) Covalent bonds form when electrons are
A
transferred
B
ionized
C
shared
D
magnetized
11) In an ionic bond, nonmetals are most likely to
A
share electrons
B
cancel electrons
C
gain electrons
D
lose electrons
12) Atoms join with other atoms by bonding with them in order to become as chemically _______ as possible.
A
stable
B
inert
C
unstable
D
electrified
13) When forming a chemical bond only the ________ electrons participate in the bonding process.
A
ionized
B
outer shell
C
ionic or covalent
D
inner shell
14) The noble gases rarely participate in chemical bonding because
A
they are gases and gases are less volatile
B
sharing electrons would not involve enough energy
C
they have an atomic structure similar to hydrogen
D
their valence electron shells are full
15) When atoms bond covalently with other atoms to form new substances the atoms ___________ electrons.
A
share and transfer
B
share
C
transfer
D
lose and gain
16) When a covalent bond forms between two atoms how many atoms have a full outer shell of electrons?
A
one
B
zero
C
it depends on what the atoms are
D
two
17) What makes the outer shell electrons important is that they
A
are not really important so they can be lost easily.
B
will always seek out atoms that have the same number of outer shell electrons
C
determine the chemical reactivity of the atom.
D
tell you what element you're dealing with if you only know how many electrons are in the outer shell
18) Which of these elements have atoms that do not have two electrons in their outer shells?
A
helium
B
calcium
C
lithium
D
magnesium
19) When an atom manages to get its outer energy level filled with electrons the atom becomes
A
non-reactive
B
very unstable
C
a new element
D
more reactive
20) Ionic bonds form when electrons are-
A
ionized
B
transferred
C
magnetized
D
shared
*select an answer for all questions
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