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Chemical Bonds Test
Test Description: Physical Science (11th)
Instructions: Answer all questions to get your test result.
1) Why do the noble gases NOT form compounds readily?
A
They have no electrons
B
They have empty outer energy levels
C
They have seven electrons in the outer energy levels
D
Their outer energy levels are completely filled with electrons
2) How many electrons are needed in the outer energy levels of most atoms for the atom to be chemically stable?
A
4
B
8
C
2
D
6
3) What kind of chemical bond is formed when an equal exchange of electrons occurs?
A
Magnetic
B
Covalent
C
Ionic
D
Hydrate
4) What is the charge of an aluminum ion that has 13 protons and 10 electrons?
A
1+
B
3+
C
2+
D
3-
5) What are the charged particles that form when atoms gain or lose electrons?
A
valence electrons
B
bonds
C
atoms
D
ions
6) In a chemical formula, the number of each type of atom in the compound is shown by numbers called __________.
A
subscripts
B
chmical symbols
C
oxidation numbers
D
superscripts
7) The elements that make up a compound and the exact number of atoms of each element in a unit of the compound can be shown in a
A
chemical formula
B
subscript
C
chemical symbol
D
superscript
8) What do atoms gain, lose, or share when they bond?
A
electrons
B
neutrons
C
protons
D
atoms
9) Most atoms form bonds using which of the following?
A
electrons
B
neutrons
C
valence electrons
D
protons
10) What is the joining of atoms to form new substances?
A
Bonding Atoms
B
Joining chemicals
C
Bonding
D
Chemical bonding
*select an answer for all questions
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