NEW
Font size
WorksheetsChapter 8 Homework
Total questions: 8
Worksheet time: 4mins
A molecule is formed when two or more atoms form a covalent bond. According to this definition, which of these is NOT a molecule?
NaCl
H2
HCl
NH3
The table shows some of the prefixes used to name binary covalent compounds. What name would be given to the compound PBr5?
Phosphorus tetrabromide
Monophosphorus pentabromide
Phosphorus pentabromide
Phosphorus hexabromide
In the polyatomic ion NH4+, the formation of a coordinate covalent bond between nitrogen and hydrogen involves _________.
hydrogen transferring a pair of electrons to nitrogen
nitrogen transferring a pair of electrons to hydrogen
hydrogen donating a pair of electrons to be shared with nitrogen
nitrogen donating a pair of electrons to be shared with hydrogen
When hydrogen and fluorine combine, a polar covalent bond is formed. Which of these formulas is the best way to express this relationship?
At room temperature, iodine (I2) is a solid and bromine (Br2) is a liquid. These molecules have different melting points because of stronger
covalent bonds in iodine
covalent bonds in bromine
intermolecular forces in iodine
intermolecular forces in bromine
The diagram shows the electron configuration of a carbon atom and the rearrangement of electrons to form four new identical orbitals in a hybridized carbon atom. This type of hybrid orbital is called an
s2 orbital
sp orbital
sp2 orbital
sp3 orbital
Which of these is the chemical formula for
sulfurous acid?
H2S
H2SO3
H2SO4
H2S2
The bond that holds two fluorine atoms together in an F2 molecule would be classified as nonpolar covalent because _________.
both atoms are different and the difference in electronegativity is large
both atoms are different and the difference in electronegativity is zero
both atoms are the same and the difference in electronegativity is large
both atoms are the same and the difference in electronegativity is zero
