WorksheetsChemical Bonds Review HW
Total questions: 70
Worksheet time: 40mins
An ion with a negative charge is called a(n) (a) .
An ionic bond forms when (a) are transferred from one atom to another.
An ion with a positive charge is called a(n) (a) .
In general, atoms want to have a full valence of this amount of electrons.
(a)
a diagram of an atom, ion or molecule in which each dot represents a valence electron
(a)
an atom or group of atoms that has a positive or negative charge
(a)
an ion with a negative charge
(a)
an ion with a positive charge
(a)
the force that holds atoms or ions together as a unit
(a)
the force that holds cations and anions together
(a)
notation that shows what elements a compound contains and the ratio of the atoms or ions of these elements in the compound
(a)
a chemical bond in which two atoms share a pair of valence electrons
(a)
a neutral group of atoms that are joined together by one or more covalent bonds
(a)
a covalent bond in which electrons are not shared equally
(a)
a covalently bonded group of atoms that has a positive or negative charge and acts as a unit
(a)
the attraction between a metal cation and the shared electrons that surround it
(a)
a mixture of two or more elements, at least one of which is a metal, that has the characteristic properties of a metal
(a)
an electron that is in the highest occupied energy level of an atom
(a)
In a covalent bond, the atoms are held together by the attractions between the shared electrons and the protons in each nucleus.
True
False
Nitrogen has five valence electrons. How many pairs of electrons must two nitrogen atoms (N2) share in order for each atom to have eight valence electrons?
zero
one
two
three
In general, elements at the top of a group have a greater attraction for electrons than elements at the bottom of the group have.
True
False
In a hydrogen chloride molecule, the shared electrons spend more time near the __________ atom because of it is larger.
hydrogen
chlorine
When atoms form a polar covalent bond, the atom with the greater attraction for electrons has a partial (a) charge.
In a molecule of a compound, electrons are always shared equally by both atoms.
True
False
Which of the following factor(s) determine whether a molecule is polar or nonpolar?
the number of atoms in the molecule
the type of atoms in the molecule
the number of bonds in the molecule
the shape of the molecule
In a water molecule, the hydrogen side of the molecule has a partial positive charge, and the oxygen side has a partial negative charge.
True
False
What is the charge of all of the elements in Group 1A?
1+
2+
0
3-
1-
The name of an ionic compound must distinguish the compound from other ionic compounds containing the same elements.
True
False
The formula for an ionic compound describes the ratio of the ions in the compound and indicates which elements the compound contains.
True
False
Which of the following words describes a compound made from only two elements?
ionic
binary
diatomic
polar
Names of anions are formed by placing the suffix -ide after part of the name of the nonmetal.
True
False
When a metal forms more than one ion, the name of the ion contains a Roman numeral to indicate the (a) of the ion.
Because all compounds are neutral, the total charges on the cations and anions in the formula of an ionic compound must add up to zero.
True
False
The formula for sodium sulfide is Na2S. The sodium ion has a charge of 1+. What must the charge on the sulfide ion be?
1+
0
1-
2-
How many ammonium ions are needed to form a compound with one phosphate ion?
1
2
3
4
The formula for a molecular compound is written with the symbols for the elements in the same order as the elements appear in the name of the compound.
True
False
In the formula of a molecular compound, the number of atoms of an element in the molecule is represented by a(n) (a) .
Which of these identifies the method of naming the number of atoms in molecular compounds?
prefix
suffix
number
symbol
Which one of these metals will have the highest melting point?
gold
titanium
vanadium
tungsten
The properties of a metal are related to bonds within the metal.
True
False
The more valence electrons a metal has, the stronger its metallic bonds will be.
True
False
The two main properties that are affected by metallic bonding are the ability to conduct electricity and (a) .
Because gold is rated on a scale that tops out at 24 karat, how much gold is in 18 karat?
18%
50%
75%
100%
When a metal such as copper is mixed with gold, the gold becomes softer.
True
False
What are the two things that scientists use to determine the properties of alloys?
types of elements
amounts of elements
temperature of elements
When carbon is added to iron, the lattice becomes stronger and (a) than a lattice that contains only iron.
Which of the elements below are contained in all types of steel?
manganese
iron
carbon
chromium
Which of the statements below are correct about stainless steel?
Stainless steel contains more carbon than chromium.
Chromium forms an oxide that protects stainless steel from rusting.
Stainless steel is more brittle than steels that contain more carbon.
Stainless steel contains more than 3 percent carbon by mass.
Because airplane parts are made of aluminum and magnesium, the resulting metal is called a(n) (a) .
The name of the compound MgF2 is (a) .
The name of the compound FeCl3 is (a) .
The name of the compound HgS is (a) .
The name of the compound Ba(NO3)2 is (a) .
The name of the compound BCl3 is (a) .
The name of the compound SO3 is (a) .
The name of the compound N2F2 is (a) .
The name of the compound SCl4 is (a) .
The name of the compound PBr3 is (a) .
The name of the compound CCl4 is (a) .
The name of the compound CaI2 is (a) .
The name of the compound FeF2 is (a) .
The name of the compound K3N is (a) .
The name of the compound AlF3 is (a) .
The name of the compound Be3N2 is (a) .
