Review 1.A.2 Question Preview (ID: 44840)


Review For Objective 1.A.2. TEACHERS: click here for quick copy question ID numbers.

What is the simplest formula for a compound made of magnesium (Mg) and chlorine (Cl)
a) MgCl
b) MgCl2
c) Mg2Cl
d) Mg2Cl2

Magnesium (Mg) has ______ valence electrons
a) 1
b) 2
c) 3
d) none of these

Chlorine (Cl) has _____ valence electrons
a) 1
b) 2
c) 3
d) none of these

Potassium (K) forms an ion that is ________ called a(n) _____.
a) positive, cation
b) positive, anion
c) negative, cation
d) negative, anion

Sulfur (S) forms an ion that is ________ called a(n) _____.
a) positive, cation
b) positive, anion
c) negative, cation
d) negative, anion

What are the products of hydrocarbon combustion?
a) salt
b) carbon dioxide
c) smoke
d) water and carbon dioxide

Products have a mass that is ________ than the reactants
a) more
b) less
c) equal to
d) none of these

Classify this reaction type: 2 K + 2 H2O -- 2 KOH + H2
a) synthesis
b) decomposition
c) single displacement
d) double displacement

Classify this reaction type: 4 Cr + 3 O2 -- 2 Cr2O3
a) synthesis
b) decomposition
c) single displacement
d) double displacement

Classify this reaction type: 2 NaClO3 -- 2 NaCl + 3 O2
a) synthesis
b) decomposition
c) single displacement
d) double displacement

Classify this reaction type: 3 AgNO3 + K3PO4 -- Ag3PO4 + 3 KNO3
a) synthesis
b) combustion
c) single displacement
d) double displacement

Classify this reaction type: 2 C2H2 + 5 O2 -- 4 CO2 + 2 H2O
a) synthesis
b) combustion
c) single displacement
d) double displacement

is the following equation balanced? BaCO3 -- BaO + CO2
a) yes
b) no
c)
d)

Which of the following shows the correct balanced equation
a) H2 + O2 → H2O
b) H2 + 2 O2 → H2O
c) 2 H2 + 2 O2 → 2 H2O
d) 2 H2 + O2 → 2 H2O

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