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Review 1.A.2
Test Description: Review for objective 1.A.2
Instructions: Answer all questions to get your test result.
1) What is the simplest formula for a compound made of magnesium (Mg) and chlorine (Cl)
A
Mg2Cl
B
MgCl2
C
MgCl
D
Mg2Cl2
2) Magnesium (Mg) has ______ valence electrons
A
3
B
2
C
none of these
D
1
3) Chlorine (Cl) has _____ valence electrons
A
1
B
3
C
none of these
D
2
4) Potassium (K) forms an ion that is ________ called a(n) _____.
A
positive, cation
B
negative, cation
C
positive, anion
D
negative, anion
5) Sulfur (S) forms an ion that is ________ called a(n) _____.
A
positive, anion
B
positive, cation
C
negative, cation
D
negative, anion
6) What are the products of hydrocarbon combustion?
A
smoke
B
water and carbon dioxide
C
carbon dioxide
D
salt
7) Products have a mass that is ________ than the reactants
A
equal to
B
more
C
less
D
none of these
8) Classify this reaction type: 2 K + 2 H2O -- 2 KOH + H2
A
synthesis
B
double displacement
C
decomposition
D
single displacement
9) Classify this reaction type: 4 Cr + 3 O2 -- 2 Cr2O3
A
double displacement
B
decomposition
C
synthesis
D
single displacement
10) Classify this reaction type: 2 NaClO3 -- 2 NaCl + 3 O2
A
single displacement
B
synthesis
C
double displacement
D
decomposition
11) Classify this reaction type: 3 AgNO3 + K3PO4 -- Ag3PO4 + 3 KNO3
A
single displacement
B
synthesis
C
double displacement
D
combustion
12) Classify this reaction type: 2 C2H2 + 5 O2 -- 4 CO2 + 2 H2O
A
combustion
B
synthesis
C
single displacement
D
double displacement
13) is the following equation balanced? BaCO3 -- BaO + CO2
A
no
B
yes
14) Which of the following shows the correct balanced equation
A
2 H2 + O2 → 2 H2O
B
H2 + 2 O2 → H2O
C
H2 + O2 → H2O
D
2 H2 + 2 O2 → 2 H2O
*select an answer for all questions
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