WorksheetsMolecular Compounds
Total questions: 50
Worksheet time: 43mins
What is the name of PBr3
phosphorus tribromide
phosphorus bromide
phosphorus (III) bromide
phosphorus bromine
A covalent bond exists between
2 metals
1 metal and 1 nonmetal
2 nonmetals
Any 2 elements
A neutral group of atoms held together by covalent bonds is a
molecular formula
chemical formula
molecule
monoatomic ion
What are shared in a covalent bond?
ions
Lewis structures
dipoles
electrons
In the compound N2O, what does the subscript 2 indicate?
There are 2 sodium atoms for each atom of oxygen
There are 2 nitrogen atoms for each atom of oxygen
There are 2 oxygen atoms for each atom of nitrogen
Nitrogen atoms are twice a large as oxygen
Which pair of atoms is most likely to form a covalent molecule?
Hydrogen and lithium
Phosphorus and sulfur
Helium and neon
Zinc and Boron
In a chemical formula, the overall charge of the compound must equal _____.
A covalent bond is:
A bond formed by the sharing of electrons between atoms.
A bond formed by the transfer of electrons from one atom to another.
A bond formed by the attraction between oppositely charged ions.
A bond formed by the sharing of protons between atoms.
A covalent bond is a chemical bond where two atoms share__________.
protons
neutrons
valence electrons
the same group on the periodic table
A molecule that has a partial positive end and a partial negative end because of unequal sharing of electrons is a _______________.
nonpolar molecule
polar molecule
ionic compound
metalic compound
Phosphorus has an electronegativity value of 2.1. Chlorine's electronegativity value is 3.0. What type of bond will these two elements form?
ionic
nonpolar covalent
polar covalent
metallic
Electronegativity is a measurement of the ability of a nucleus to:
attract bonding electrons
attract other nuclei
attract electrons in the non-valence energy levels
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
Electronegativity increases from left to right on the periodic table because there are ___
fewer protons in the atoms
more protons in the atoms
fewer electron shells
more electron shells
What is true about a polar molecule?
The atoms give away valence electrons.
The atoms share the electrons EQUALLY.
The atoms share electrons UNEQUALLY.
The atoms are all noble gases.
Whether it's a covalent molecule or ionic compound all the atoms usually want...
8 valence electrons
=
More protons
To have a neutral charge
To be like hydrogen
In a non-polar covalent bond there is a(n)
unequal sharing of electrons
different distribution of electrons
presence of hydrogen bonding
equal sharing of electrons
What are intermolecular forces?
Forces of attraction or repulsion between neighboring particles.
Forces that are not affected by distance between particles
Forces between particles within the same molecule
Forces that exist only in solids
How do London forces arise?
Covalent bonds between atoms
Permanent dipole moments in molecules
Ionic bonding between atoms
Temporary dipoles caused by electron distribution around atoms
The weaker the intermolecular forces of a substance the _____________ the boiling point
higher
lower
Which chemical bond is formed when electrons are shared?
Hydrogen
Covalent
Ionic
Magnetic
What causes dipole interactions?
Attraction between polar molecules
Attraction between ions
Bonding of a covalently bonded hydrogen to an unshared electron pair
Motion of electrons
Which force is responsible for keeping matter in solid or liquid phase?
Intermolecular Forces
Intramolecular Forces
Hydrogen Forces
Combustion Force
________________________ have the strongest intermolecular forces of attraction.
Dipole- Dipole
Dispersion
Hydrogen Bonds
covalent bond
London forces
hydrogen bond
dipole-dipole attraction
Which is NOT an intramolecular force?
Polar Covalent Bond
Nonpolar Covalent Bond
London Dispersion Force
Ionic Bond
Which has the strongest forces between particles (usually)?
ionic bonding
metallic bonding
covalent bonding
Which occurs between metal and non-metals?
ionic bonding
metallic bonding
covalent bonding
Which of the following types of bonding results in materials which are generally insoluble in water?
ionic bonding
metallic bonding
covalent bonding
Which of the following types of bonding results in materials which have the highest melting and boiling points?
ionic bonding
metallic bonding
covalent bonding
Which of the following is an intramolecular force?
hydrogen bonding
covalent bonding
Which is NOT an intramolecular force?
Polar Covalent Bond
Nonpolar Covalent Bond
London Dispersion Force
Ionic Bond
If two identical atoms bond covalently, the bond is:
a coordinate covalent bond
a dipole covalent bond
a nonpolar covalent bond
a polar covalent bond
If the difference in electronegativity between two bonding atoms is less than 1.7 but greater than .03 the bond is
ionic
polar covalent
metallic
nonpolar covalent
How many valence electrons does an atom of any halogen have?
1
2
4
7
