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Types Of Reactions And Mol Conversions
Test Description: Covers types of reactions, balancing equations, mol conversions and stoichiometry
Instructions: Answer all questions to get your test result.
1) What type of reaction happens when two or more substances to form a single product?
A
Single displacement
B
Combustion
C
Synthesis
D
Decomposistion
2) What type of reaction happens what a single reactant breaks down into multiple products?
A
Synthesis
B
Combustion
C
Single displacement
D
Decomposistion
3) What reactant must a combustion reaction always have?
A
Oxygen
B
Wood
C
Water
D
Carbon dioxide
4) When two aqueous solutions mix, and a precipitate forms, what type of reaction has taken place?
A
Synthesis
B
Double displacement
C
Decomposistion
D
Single displacement
5) What ion does an acid produce?
A
Acid is not an ion
B
Hydrogen ion
C
Hydroxide ion
D
Carbonate ion
6) What type of reaction happens when an acid and base react?
A
Combustion
B
Neutralization
C
Precipitate
D
Corrosion
7) If a chemical has a pH of 6.2 it is:
A
a strong acid
B
a strong base
C
a weak acid
D
a weak base
8) What coefficients are needed to balance the equation where HgO decomposes into Hg and O2? ( HgO ---- Hg + O2)
A
1, 2, 1
B
1, 1, 1
C
2, 2, 1
D
2, 1, 2
9) What are the units for molarity (M)?
A
mol/particle
B
mol/g
C
mol/L
D
L/mol
10) What is the molarity of a solution that has 0.045 mols of sugar dissolved in 0.02 L of water?
A
0.444 M
B
0.065 M
C
2.25 M
D
0.0009 M
11) If you dissolve 45 grams of sugar (molar mass = 342.3 g/mol) into a solution with a final molarity of 0.398 mol/L, how many liters are used to make the solution?
A
19.1 L
B
0.33 L
C
2.5 L
D
0.0523 L
12) 100.0 g of Chlorine gas (Cl2) will be how many molecules?
A
8.5 x 10^23
B
2.1 x 10^23
C
1.7 x 10^23
D
4.2 x 10^23
13) 6.02 x 10^23 particles of Guaca is:
A
Not enough information
B
Avogadro's Number
C
Too much guaca
D
1 Guaca mole, or Avocado's number
14) Use the (already balanced) equation (CaCO3 ---- CaO + CO2) to help answer the question: How many grams of CaO will be produced by the decomposistion of 15.0g g CaCO3?
A
374 g CaO
B
0.0027 g CaO
C
0.119 g CaO
D
8.4 g CaO
15) What is Ms. Rose's middle name?
A
Shenanigan
B
Chemi
C
Rose
D
Elizabeth
*select an answer for all questions
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