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Science
Covalent Bonding
Quiz 2
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Q.1
If an atom has no charge, which of the following must be true?
It has more neutrons than protons or electrons.
There are only neutrons inside the atom.
Its number of protons is equal to its number of electrons.
The neutrons in the atom outnumber the electrons and protons.
Q.2
What is the charge of a sodium ion withprotons andelectrons?
1+
1-
2+
2-
Q.3
What does a sodium atom become when it loses its only valence electron?
sodium compound
sodium atom
ionic compound
sodium ion
Q.4
Most atoms have no net charge because they have....
an equal number of charged and non-charged particles
neutrons in their nuclei
an equal number of electrons and protons
an equal number of neutrons and protons
Q.5
Electrons have a charge of:
-1
-2
+1
+2
Q.6
Protons have a charge of:
-1
+1
-2
+2
Q.7
What happens when you put an ionic compound in water?
The ions separate
The ions pack more closely together
Nothing happens
Q.8
Generally, atoms form bonds so that _______________.
Each atom loses its electrons
Each atom has a stable electron configuration
Each atom has an unstable electron configuration
Each atom gains electrons
Q.9
Generally low melting and boiling points
Ionic compounds
Covalent compounds
Q.10
Generally high melting & boiling points
Ionic compounds
Covalent compounds
Q.11
Can be a solid, liquid, or gas at room temperature
Ionic compounds
Covalent compounds
Q.12
Always a solid at room temperature
Ionic compounds
Covalent compounds
Q.13
Valence electrons are transferred
Ionic bonds
Covalent bonds
Q.14
Network of bonded ions
Ionic bonds
Covalent bonds
Q.15
Poor electrical conductivity
Ionic compounds
Covalent compounds
Q.16
Molecules
Ionic compounds
Covalent compounds
Q.17
Conducts electricity well when melted or dissolved
Ionic compounds
Covalent compounds
Q.18
Valence electrons are shared
Ionic bonds
Covalent bonds
Q.19
The chemical name of P₄S₁₀ is:
phosphorous sulfide
phosphorus sulfide
tetraphosphorus decasulfide
phosphorus (X) sulfide
Q.20
The chemical formula for Bromine monofluoride is:
Br1F1
BrF
Br2F
BrF2
0 h : 0 m : 1 s
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