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Science 6 Chapter 3 Test Set A
Test Description: Chemical Bonding
Instructions: Answer all questions to get your test result.
1) Which is a property shared by most molecular compounds?
A
high boiling poing
B
low melting point
C
high melting point
D
nonpolar bonds
2) When an atom loses a electron, it becomes
A
a neutral atom
B
a positive ion
C
a negative ion
D
a neutral ion
3) Magnesium bromide is an ionic compound with the chemical formula MgBr₂. What does the 2 tell you?
A
There are 2 bromide ions to each magnesium ion
B
Bromide has a 2- charge
C
There are 2 magnesium ions to each bromide ion
D
Bromide has a 2+ charge
4) In the name of a chemical formula for an ionic compound, which item is written first?
A
the name of the positive ion
B
the name of the negative ion
C
the subscripts
D
the charges
5) The name of the chemical with the formula Na₂S is
A
magnesium sulfide
B
lithium oxide
C
sodium fluoride
D
sodium sulfide
6) What is a double bond?
A
A bond between two atoms
B
two pairs of electrons shared between four atoms
C
two pairs of electrons shared between two atoms
D
one pair of electrons shared between two atoms
7) Electrons involved in bonding between atoms are
A
inside the nucleus
B
valence electrons
C
close to the nucleus
D
positively charged
8) A mixture made of two or more elements, at least one of which is a metal, is called a(n)
A
superconductor
B
complex metal
C
metallic bond
D
alloy
9) Which of the following means that metals can be rolled into thin sheets or beaten into complex shapes?
A
conductivity
B
polarity
C
ductility
D
malleability
10) Which of the following groups contains the most reactive elements?
A
the alkaline earth metals
B
the alkali metals
C
the noble gases
D
the carbon family
11) Which of the following is the correct formula for carbon tetrachloride?
A
C₄Cl
B
CaCl₄
C
CaTc₄
D
CCl₄
12) What is the name for SO₂?
A
monosulfur dioxide
B
disulfur monoxide
C
disulfur dioxide
D
sulfur dioxide
*select an answer for all questions
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