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WorksheetsWeek 6 Quiz 8th Grade
Total questions: 63
Worksheet time: 3585secs
What is a cation's charge?
positive
negative
neutral
depends on the element
What is an anion's charge?
positive
negative
neutral
depends on the element's charge
Why do all bonds form?
so the number of protons equals the number of electrons
so an atom can become unstable
to fill the outermost energy level
Valence electrons are found
in the innermost energy level of an atom
in the middle energy levels of an atom
in the outermost energy levels of an atom
Which is the correct molecular structure for carbon dioxide?
What do atoms that form positive ions tend to do?
lose electrons
gain electrons
lose protons
gain protons
What is the maximum number of electrons that can be contained in the 2nd energy level?
2
6
8
18
Which of the following elements will likely gain an electron?
K
Cl
Na
Al
Why do atoms take part in bond formation?
to neutralize their charges
to increase their energies
to gain more electrons
to attain stability
How many atoms of fluorine are in a molecule of carbon tetrafluoride?
4
5
3
6
Metals tend to lose electrons to become negative ions.
TRUE
FALSE
The positive ions tend to _____________ electrons.
lose
gain
The negative ions tend to _____________ electrons.
lose
gain
Why are sodium and chlorine attracted to each other?
they have opposite charges
they both have negative charges
they both have positive charges
Valence electrons are found
in the innermost energy level of an atom
in the middle energy levels of an atom
in the outermost energy levels of an atom
How many valence electrons does hydrogen have?
1
2
3
4
When an atom loses an electron, it becomes a
positive ion
negative ion
neutral ion
neutral atom
Metals make _____ ions.
positive
negative
neutral
Nonmetals will make _____ions.
positive
negative
neutral
What part of the atom does bonding involve?
protons
neutrons
all electrons
valence electrons
How many valence electrons do MOST atoms need to be stable?
123
8
as many as there are protons
What type of bond would form between O and H?
Polar Covalent
Non-Polar Covalent
Ionic
What type of bond would form between O and O?
Polar Covalent
Non-Polar Covalent
Ionic
What type of bond would form between Li and O?
Polar Covalent
Non-Polar Covalent
Ionic
The bond between C and Cl is polar covalent. That means
there is a pair of electrons shared equally between them
there is a pair of electrons shared unequally between them
an electron will be stolen from one and given to the other
The bond between K and N is ionic. Which atom will steal the electrons from the other?
K will steal electrons from N and become (+)
K will steal electrons from N and become (-)
N will steal electrons from K and become (+)
N will steal electrons from K and become (-)
The bond between C and H is non-polar covalent. That means
there is a pair of electrons shared equally between them
there is a pair of electrons shared unequally between them
an electron will be stolen from one and given to the other
Water, H2O, is classified as what type of molecule?
a polar molecule
a nonpolar molecule
a coordinate covalent compound
an ionic compound
What is the measure of the tendency of an atom to attract bonding electrons called?
ionization energy
electron charisma
dipole momentum
electronegativity
Use your knowledge and electronegativity sheet to predict what the following compound is classified as.
non-polar covalent
polar covalent
ionic
metallic
Non-polar molecules (those with only nonpolar bonds) ___.
are neutral but act as if each side has a charge
are charged compounds
are neutral molecules with no charge or attraction
Polar molecules (those with polar bonds) ___.
are neutral but act as if each side has a charge
are charged compounds
are neutral molecules with no charge or attraction
