WorksheetsPhysical Science Ch. 5
Total questions: 20
Worksheet time: 10mins
Which of the following is not true regarding chemical bonds?
Chemical bonds form compounds that are less stable than the individual atoms involved
Chemical bonds can form when atoms gain or lose electrons.
Chemical bonds can form when atoms share electrons.
The octet rule states that atoms are generally most stable when
eight atoms form ring-shaped molecules.
they combine with other elements to form compounds.
they have eight electrons in their valence energy level
The properties of water are different from the properties of hydrogen and oxygen because
chemical bonding changes the properties.
hydrogen and oxygen are a gas, and water cannot be a gas
they consist of different elements.
Covalent bonding forms __________, while ionic bonding forms __________.
diatomic molecules; Lewis structures
molecules; crystals
polar molecules; nonpolar molecules
Why does diatomic nitrogen form triple bonds?
Nitrogen needs three additional electrons to complete its octet
Nitrogen is part of the Hydrogen Seven
Diatomic nitrogen is a polar molecule.
Which atom is most likely to take valence electrons in ionic bonding?
. an atom found in diatomic molecules
an atom found in polar molecules
an atom with high electronegativity
Refer to a periodic table. Which of the following is the correct Lewis structure for potassium fluoride?
K – F
K = F
How many atoms are represented by the chemical formula CuSO4?
3
4
6
7
Refer to a periodic table. Which of the following chemical formulas would most likely represent the ionic compound potassium nitride?
Refer to a periodic table. What ratio of ammonium ( NH4 + ) to chlorine (Cl– ) ions would you expect to find in ammonium chloride?
1:1
1:2
1:4
4:1
What is the name for the covalent compound SF 6 (the 6 is a sub script)?
fluoride hexasulfite
hexafluoride sulfate
sulfur hexafluoride
Identify each bond description as covalent (C), ionic (I), or metallic (M).
between oppositely charged ions
Ionic
Metallic
Covalent
Identify each bond description as covalent (C), ionic (I), or metallic (M).
between atoms with very different electronegativities
Ionic
Metallic
Covalent
Identify each bond description as covalent (C), ionic (I), or metallic (M).
between elements such as transition metals with similar low electronegativities
Ionic
Metallic
Covalent
Identify each bond description as covalent (C), ionic (I), or metallic (M).
most often formed between nonmetals
Ionic
Metallic
Covalent
Identify each bond description as covalent (C), ionic (I), or metallic (M).
resulting in a sea of shared electrons
Ionic
Metallic
Covalent
Identify each bond description as covalent (C), ionic (I), or metallic (M).
resulting from two atoms sharing electrons
Ionic
Metallic
Covalent
Molecules made of exactly two atoms are called ________ molecules.
diatomic
Polyatomic
polarity
A group of covalently bonded atoms that together have a net charge is a(n)
diatomic
Polyatomic ion
polarity
Unequal distribution of electric charge is called _________.
polarity
diatomic
