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W12 Covalent Bonding DiPofi 23-24
Test Description: Practice for Quiz
Instructions: Answer all questions to get your test result.
1) Atoms are the ____ unit of ordinary matter that forms a chemical element.
A
most dense
B
smallest
C
largest
D
heaviest
2) The ____ that hold atoms together are called chemical bonds.
A
forces
B
alkalis
C
acids
D
bases
3) The type of chemical ____ formed between atoms depends on what type of elements the atoms are.
A
incision
B
fusion
C
bond
D
charge
4) When metal atoms transfer electrons to nonmetal atoms during a chemical reaction, a (an) ___ bond is formed.
A
covalent
B
bionic
C
ionic
D
metallic
5) A _____ bond is formed when two nonmetal atoms share electrons. This forms a unit called a molecule.
A
bionic
B
metallic
C
ionic
D
covalent
6) A covalent bond is a chemical bond that is formed when two nonmetal atoms ___ one or more pairs of electrons.
A
transfer
B
separate
C
share
D
split
7) The ____ rule we remember states that atoms will continue to form chemical bonds until they reach a stable outer shell of 8 electrons.
A
triad
B
ionic
C
covalent
D
octet
8) ______ has the chemical formula H2O. This means that a molecule of water has one oxygen atom and two hydrogen atoms.
A
Water
B
Carbon
C
Peroxide
D
Carbon Dioxide
9) A molecule of oxygen contains two oxygen atoms that each have ____ valence electrons.
A
five
B
three
C
two
D
six
10) A molecule of nitrogen contains two nitrogen atoms that each have ____ valence electrons.
A
three
B
two
C
six
D
five
11) Oxides are compounds that contain ____ and another element.
A
oxygen
B
boron
C
hydrogen
D
carbon
*select an answer for all questions
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