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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
smallest
B
most dense
C
largest
D
heaviest
2) The ____ that hold atoms together are called chemical bonds.
A
acids
B
alkalis
C
bases
D
forces
3) The type of chemical ____ formed between atoms depends on what type of elements the atoms are.
A
incision
B
fusion
C
charge
D
bond
4) When metal atoms transfer electrons to nonmetal atoms during a chemical reaction, a (an) ___ bond is formed.
A
metallic
B
bionic
C
ionic
D
covalent
5) A _____ bond is formed when two nonmetal atoms share electrons. This forms a unit called a molecule.
A
metallic
B
covalent
C
bionic
D
ionic
6) A covalent bond is a chemical bond that is formed when two nonmetal atoms ___ one or more pairs of electrons.
A
transfer
B
split
C
share
D
separate
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
ionic
B
covalent
C
triad
D
octet
8) ______ has the chemical formula H2O. This means that a molecule of water has one oxygen atom and two hydrogen atoms.
A
Carbon
B
Peroxide
C
Water
D
Carbon Dioxide
9) A molecule of oxygen contains two oxygen atoms that each have ____ valence electrons.
A
six
B
two
C
five
D
three
10) A molecule of nitrogen contains two nitrogen atoms that each have ____ valence electrons.
A
five
B
two
C
six
D
three
11) Oxides are compounds that contain ____ and another element.
A
hydrogen
B
oxygen
C
carbon
D
boron
*select an answer for all questions
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