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Semester 2 Exam-Chemistry Final

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Last updated over 3 years ago
39 questions
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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
Question 1
1.

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).

Question 2
2.

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

Question 3
3.

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).

Question 4
4.

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

Question 5
5.

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).

Question 6
6.

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

Question 7
7.

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).

Question 8
8.

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

Question 9
9.

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

Question 10
10.

Which metals are more reactive than Tin?

Question 11
11.

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

Question 12
12.

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

Question 13
13.

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

Question 14
14.

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

Question 15
15.

Which is the correct name for the compound NaN?

Question 16
16.

Which is the correct name for the compound Li3PO3?

Question 17
17.

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

Question 18
18.

Write the chemical name for the following compound ZnF2.

Question 19
19.

Write the chemical name for the following compound Na2S.

Question 20
20.

Which combination of bonds is present in this molecule?

Question 21
21.

Which is NOT a diatomic molecule?

Question 22
22.

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

Question 23
23.

What molecular shape does the compound CH4 have?

Question 24
24.

Which is the correct formula for the compound nitrogen dioxide?

Question 25
25.

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

Question 26
26.

Name the compound N3S7

Question 27
27.

Name the compound PF3

Question 28
28.

Name the compound NO

Question 29
29.

Name the type of hybridization:

Question 30
30.

How many lone pairs of electrons in the molecule?

Question 31
31.

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

Question 32
32.

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

Question 33
33.

Calculate the molar mass of hydrogen peroxide(H2O2).

Question 34
34.

Calculate the molar mass of sulfur trioxide(SO3).

Question 35
35.

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

Question 36
36.

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

Question 37
37.

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

Question 38
38.

Give the formula for the covalent compound pentanitrogen decafluoride.

Question 39
39.

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.