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Biblioteka

Semester 2 Exam-Chemistry

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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

Pitanje 1
1.

Given the following chemical equation.

____ C5H12(g) →____ C(g) + ____ CH4(g)

Balance the equation(type your answer in as 5, 6, 7 separate the coefficients with commas).

Pitanje 2
2.

Given the following chemical equation.

____ C5H12(g) →____ C(g) + ____ CH4(g)

Identify the type of chemical reaction.

Pitanje 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).

Pitanje 4
4.

Given the following chemical equation.

____ Al2(CO3)3(s) → ____ Al2O3(s) + ____ CO2(g)

Identify the type of chemical reaction.

Pitanje 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).

Pitanje 6
6.

Given the following chemical equation.

____ Ni2S3(s) → ____ Ni(s) + ____ S(s)

Identify the type of chemical reaction.

Pitanje 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).

Pitanje 8
8.

Given the following chemical equation.

_____C3H6(g) ______O2(g) →______CO2(g) ______H2O(l)

Identify the type of chemical reaction.

Pitanje 9
9.

Given the following chemical equation.

_____C3H6(g) ______O2(g) →______CO(g) ______H2O(l)

Which substances are gases?

Pitanje 10
10.

Which metals are more reactive than manganeses?

Pitanje 11
11.

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

Pitanje 12
12.

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

Pitanje 13
13.

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

Pitanje 14
14.

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

Pitanje 15
15.

Which is the correct name for the compound NaNO3?

Pitanje 16
16.

Which is the correct name for the compound Li3P?

Pitanje 17
17.

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

Pitanje 18
18.

Write the chemical name for the following compound ZnF2.

Pitanje 19
19.

Write the chemical name for the following compound CO.

Pitanje 20
20.

Which combination of bonds is present in this molecule?

Pitanje 21
21.

Which is NOT a diatomic molecule?

Pitanje 22
22.

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

Pitanje 23
23.

What molecular shape does the compound CH4 have?

Pitanje 24
24.

Which is the correct formula for the compound dinitrogen monoxide?

Pitanje 25
25.

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

Pitanje 26
26.

Name the compound NS3

Pitanje 27
27.

Name the compound P2F5

Pitanje 28
28.

Name the compound SO

Pitanje 29
29.

Name the type of hybridization:

Pitanje 30
30.

How many lone pairs of electrons in the molecule?

Pitanje 31
31.

Mole-Particle Conversions

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

Pitanje 32
32.

How many molecules are there in 0.8150 moles of carbon dioxide, CO2(include units in the answer)?

Pitanje 33
33.

Calculate the molar mass of hydrogen peroxide(H2O2)______________g/mol.

Pitanje 34
34.

Calculate the molar mass of sulfur trioxide(SO3)______________g/mol.

Pitanje 35
35.

Convert 25.6 grams of carbon dioxide(CO2) to ____________ moles of carbon dioxide.

Pitanje 36
36.

Convert 10.2 grams of sodium chloride(NaCl) to ____________ moleculess of sodium chloride.

Pitanje 37
37.

Convert 9.112 moles of magnesium chloride(MgCl2) to ____________ grams of magnesium chloride.

Pitanje 38
38.

Give the formula for the covalent compound trinitrogen pentafluoride.

Pitanje 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.