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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
nonpolar bonds
C
low melting point
D
high melting point
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
Bromide has a 2+ charge
B
There are 2 bromide ions to each magnesium ion
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
lithium oxide
B
sodium sulfide
C
sodium fluoride
D
magnesium sulfide
6) What is a double bond?
A
two pairs of electrons shared between two atoms
B
one pair of electrons shared between two atoms
C
two pairs of electrons shared between four atoms
D
A bond between two atoms
7) Electrons involved in bonding between atoms are
A
valence electrons
B
close to the nucleus
C
inside 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
metallic bond
B
complex metal
C
alloy
D
superconductor
9) Which of the following means that metals can be rolled into thin sheets or beaten into complex shapes?
A
ductility
B
polarity
C
malleability
D
conductivity
10) Which of the following groups contains the most reactive elements?
A
the noble gases
B
the alkali metals
C
the carbon family
D
the alkaline earth metals
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
disulfur monoxide
B
disulfur dioxide
C
sulfur dioxide
D
monosulfur dioxide
*select an answer for all questions
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