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WorksheetsCHEM 160 Exam 3
Total questions: 20
Worksheet time: 10mins
Electrons are ___________ in ionic compounds.
shared
completely transferred
delocalized
ionic
True or false: Ionic compounds have a high melting and boiling point.
true
false
True or false: covalent compounds are hard and brittle.
true
false
Ionic compounds are insulators in the __________ phase and conductors in the ________ phase.
solid, liquid/aqueous
gas, liquid
hard, soft
solid, conductor
True or false: in metallic compounds, metals are bonded to another nonmetal.
true
false
Metals are excellent ___________ which means they let electricity pass through it easily.
insulators
compounds
bonders
conductors
Covalent compounds are also called ______.
molecules
resonance structures
ions
networks
Most elements obey the octet rule, which means they want _____ valence electrons.
12
2
7
8
How many valence electrons does sulfur have?
5
6
12
3
Which element is an example of a hypervalent central atom?
xenon
nitrogen
carbon
oxygen
What type of bond is the strongest and requires a high bond dissociation energy?
single
double
triple
quintuple
What is the correct name for this molecule?
sulfate
sulfur trioxide
sulfuric acid
bicarbonate
How many pi bonds are in a triple bond?
4
1
2
3
What type of bond does every bond (single, double, triple) have?
sigma
omega
pi
delta
The name of this compound is:
monobarium dichloride
barium chloride
barium chlorate
beryllium chloride
True or false: electronegativity increases left to right within a period, and increases from bottom to top within a group.
true
false
What is the name of this structure?
hexane
cyclobutane
cycloheptane
cyclohexane
What is this alkane called?
heptane
octane
propane
hexane
What is iron's charge in the chemical formula FeCl3?
1+
2+
3+
1-
What is the name of this oxyanion?
iodate
periodate
hypoiodite
iodite
