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Semester 2 Exam-Chemistry Final

Last updated over 3 years ago
39 questions
Mole Conversion: 1 mole = 6.02x1023 molecules/formula units/atoms

REMINDER:
Type of Unit Examples Substance
Molecules H2O C3H8 Covalent Compounds
Formula Unit NaCl KNO3 Ionic Compounds
Atoms Au Zn Cu Elements on Periodic Table
6

Given the following chemical equation.
____ C8H16(g) →____ C(g) + ____ CH4(g)
Balance the equation(type your answer in as 5, 6, 7 separate the coefficients with commas).

2

Given the following chemical equation.
____ C8H16(g) →____ C(g) + ____ CH4(g)
Identify the type of chemical reaction.

6

Balance each chemical equation.
____ Al2(CO3)3(s) → ____ Al2O3(s) + ____ CO2(g)
Balance the equation(type your answer in as 5, 6, 7 separate the coefficients with commas).

2

Given the following chemical equation.
____ Al2(CO3)3(s) → ____ Al2O3(s) + ____ CO2(g)
Identify the type of chemical reaction.

6

Balance each chemical equation.
____ Ni2Se3(s) → ____ Ni(s) + ____ Se(s)
Balance the equation(type your answer in as 5, 6, 7 separate the coefficients with commas).

2

Given the following chemical equation.
____ Ni2S3(s) → ____ Ni(s) + ____ S(s)
Identify the type of chemical reaction.

8

Balance each chemical equation.
_____C3H6 ______O2 →______CO2 ______H2O
Balance the equation(type your answer in as 5, 6, 7, 8 separate the coefficients with commas).

2

Given the following chemical equation.
_____C3H6(g) ______O2(g) →______CO2(g) ______H2O(l)
Identify the type of chemical reaction.

2

Given the following chemical equation.
_____C3H6(g) ______O2(g) →______CO(g) ______H2O(l)
Which substances are gases?

10

Which metals are more reactive than Tin?

2

Which is true of the model of bonding shown in this figure?

2

Which is the charge that results when nitrogen becomes an ion?

2

Which is a physical property of ionic compounds in their solid state?

2

Which is the correct formula for the compound formed between calcium and sulfur?

2

Which is the correct name for the compound NaN?

2

Which is the correct name for the compound Li3PO3?

2

The name of the anion PO4-3 is ____________________ ion.

2

Write the chemical name for the following compound ZnF2.

2

Write the chemical name for the following compound Na2S.

2

Which combination of bonds is present in this molecule?

2

Which is NOT a diatomic molecule?

2

Which type of bond has two pair of electrons shared between atoms?

2

What molecular shape does the compound CH4 have?

2

Which is the correct formula for the compound nitrogen dioxide?

2

How many pi bonds are there in a triple covalent bond?

2

Name the compound N3S7

2

Name the compound PF3

2

Name the compound NO

2

Name the type of hybridization:

2

How many lone pairs of electrons in the molecule?

4

Mole-Particle Conversions
How many moles of carbon dioxide in 1.96x1024 molecules of carbon dioxide(include units in the answer)?

4

How many molecules are there in 0.815 moles of carbon dioxide, CO2(include units in the answer)?

2

Calculate the molar mass of hydrogen peroxide(H2O2).

2

Calculate the molar mass of sulfur trioxide(SO3).

4

Convert 25.6 grams of methane gas(CH4) to ____________ moles of methane gas.

6

Convert 8.099 grams of carbon dioxide(CO2) to ____________ molecules of carbon dioxide(no units).

4

Convert 1.992 moles of magnesium chloride(MgCl2) to ____________ grams of magnesium chloride.

4

Give the formula for the covalent compound pentanitrogen decafluoride.

10

Essay--Write the answer to one essay question in the space provided below.
FCA’s 1. Write in complete sentences and paragraph form. 2. Use Chapter 7, 8, 9, 10 terminology to answer questions(example: electrons, binary, ionic, etc...).
3. Provide inferences, other thoughts, or personal experiences in your answer whenever possible.
#1 Explain why sulfur aluminide is not a correct name for the ionic compound formed between sulfur and aluminum.
#2 Explain why it is not possible to write a correct chemical formula for the compound Copper Chloride.
#3 Explain why is PCl5 an exception to the octet rule, while PCl3 is not?
#4 Vanderwaal's forces, Dipole-Diple moment, and Hydrogen bonding are used to explain bonding between covalent compounds. Explain which is the strongest of the three bonding forces and how the molecules bond according to this force.