Chemical Bonds – A Quiz
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1. In a chemical formula, the ratio of atoms in the compound is shown by numbers called
____.
• [A] oxidation numbers
• [B] superscripts
• [C] hydrates
• [D] subscripts
2. A chemical bond that occurs when atoms share electrons is a(n) ____ bond.
• [A] ionic
• [B] covalent
• [C] polyatomic
• [D] magnetic
3. The name given to the combining ability of an atom is ____.
• [A] ionic number
• [B] atomic number
• [C] oxidation number
• [D] atomic mass
4. How many electrons are needed in the outer energy levels of most atoms for the atom
to be chemically stable?
• [A] 2
• [B] 4
• [C] 6
• [D] 8
5. What is the name of the binary compound made of lithium and chlorine?
• [A] chloride lithium
• [B] lithium chlorate
• [C] lithium chloride
• [D] chlorine lithiate
6. What kind of chemical bond is formed when electrons are gained and lost from atoms?
• [A] ionic
• [B] covalent
• [C] magnetic
• [D] hydrate
7. What is the name of the compound with the formula NaCl?
• [A] sodium chloride
• [B] chlorine sodiate
• [C] sodium dichloride
• [D] sodium chlorate
8. Force that holds together the atoms in a compound
• [A] chemical formula
• [B] chemical bond
9. An atom that has an electrical charge
• [A] element
• [B] ion
10.
Molecule that has oppositely charged ends
• [A] covalent molecule
• [B] polar molecule
11.
Number and sign written by the symbol of an ion to indicate its charge
• [A] subscript
• [B] superscript
12.
Force of attraction between the opposite charges of the ions in an ionic
compound
• [A] ionic bond
• [B] polar bond
13.
In the symbol Na+, the + sign is a
• [A] subscript
• [B] superscript
14.
A chloride ion, Cl-, has ____.
• [A] a negative charge
• [B] no charge
15.
The compound NaCl is an example of
• [A] an ionic compound
• [B] a polar compound
16.
When Na+ and Cl- unite to form the compound sodium chloride, the compound
that forms is ____.
• [A] positively charged
• [B] neutral
17.
At room temperature, most covalent compounds are ____.
• [A] solids
• [B] liquids or gases
18.
At room temperature, most ionic compounds are ____.
• [A] solids
• [B] liquids or gases
19.
In the formula H2O, the number 2 is a
• [A] subscript
• [B] superscript
20.
In the formula HCl, the ratio of hydrogen atoms to chlorine atoms is ____.
• [A] 1:1
• [B] 2:1
21.
The number 2 in the formula H2O tells you that each unit of this compound
contains ____.
• [A] 2 hydrogen atoms
• [B] 2 oxygen atoms
22.
In the formula Fe2O3, the ratio of iron atoms to oxygen atoms is ____.
• [A] 3:2
• [B] 2:3
23.
• [A] force
• [B] chemical
A chemical bond is a ____ that holds together the atoms in a compound.