Franck CP Chemistry Semester 2 Exam 2024

Instrukcije

Answer each question to the best of your ability. There is only one correct answer to each. Use the following charts to help you along your way. You may also use a calculator.

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1

Use the diagram to answer the following question.
How many bonds are made by each carbon atom in the molecule shown above?

three

one

two

four

1

Two elements in a molecule have the same electronegativity values. Which of the following most likely holds the elements together and why?

a nonpolar covalent bond, because the elements share electrons equally

an ionic bond, because electrons transfer from one element to the other

an intermolecular force, because the elements do not form a chemical bond

a polar covalent bond, because the elements do not share electrons equally

10

Categorize the following items as being either endothermic or exothermic.

solution feels cold
solution feels hot
melting of water
photosynthesis
Bond Formation
condensation of water
Bonds Breaking
combustion

Endothermic
Exothermic

8

Match the element to the correct number of valence electrons

Stavka koja se može prevući		Odgovarajuća stavka
C (Carbon)		8
Fr (Francium)		2
Kr (Kypton)		5
I (Iodine)		1
As (Arsenic)		6
Ca (Calcium)		4
S (Sulfur)		7

1

In the molecule below, which atom has the largest partial negative charge __________?

F

Cl

I

C

3

4

5

Drugi mogući odgovor:

0

1

synthesis

2

decomposition

double replacement

3

single replacement

combustion

3

Drugi mogući odgovor:

2

3

0

1

2

Show how to calculate how many moles of carbon dioxide there are when you have 52.06 g of carbon dioxide (CO₂), and choose the correct answer. (Choose 2 selections from below)

2

Drugi mogući odgovor:

1 mol C₃H₈ / 32 g C₃H₈

0.83 mol CO₂

7.5 mol CO₂

1 mol C₃H₈ / 3 mol CO₂

32 g C₃H₈ / 1 mol C₃H₈

3 mol CO₂ / 1 mol C₃H₈

1

Which reaction diagram shows the effect of using the appropriate catalyst in a chemical reaction?

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1

In a sealed bottle that is half full of water, equilibrium will be reached when water molecules

evaporate and condense at equal rates

begin to condense

are equal in number for both the liquid and the gas phase

stop evaporating

1

3X + 8Y --> 3XY₂ + 2Y

X + 2Y --> XY₂

3X + 6Y --> X₃Y₆

3X + 8Y --> X₃Y₈

1

In the chemical reaction shown below, all of the HCl and Zn will react to form H₂ and ZnCl₂
Which of the following statements describes the result of this reaction?

The mass of the products will equal the mass of the reactants.

The mass of the hydrogen atoms will decrease in the products.

The hydrogen gas will have a mass of zero.

The zinc chloride will have have less mass than the zinc.

1

When a steel block at 100^oC is placed on top of a copper block at 20^oC, the thermal energy of the copper begins to increase. Which of the following is the source of this increase in energy?

heat flowing by means of conduction

heat flowing by means of convection

tiny little heat gnomes that carry energy backpacks back and forth

heat flowing by means of radiation

1

A popcorn kernel is up to 13% water. The drawing above shows a kernel of corn that is heated until it pops. Which of the following best explains what happens to the liquid water stored inside the kernel that leads to the popping process?

The liquid water undergoes a physical change into steam.

The liquid water is converted into heat

The liquid water is destroyed by the heat.

The liquid water undergoes a chemical change into hydrogen and oxygen gases.

1

The diagram shown represents a closed energy system. The system contains equal masses of air, copper, and water in a perfectly insulated container. The temperatures were taken at the time the materials were placed in the closed system.
How will the temperatures of the materials change over an extended period of time?

The temperature of each material will decrease

The temperature of each material will remain constant

All of the materials will reach the same temperature

Warmer materials will get warmer and cooler materials will get cooler

6

Select which type of bond is being formed in the following substances.

6

1

Which of the following objects transfers its energy primarily by radiation?

Heat lamp

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Burning Candle

null

Ceiling Fan

null

Electric Stovetop

null

1

Which of the following is the best example of heat transfer by convection?

From the Sun to Earth

null

From the iron to the shirt

null

From the lower water to the surface

null

From the griddle to the eggs

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1

Which of the following has the lowest average molecular kinetic energy?

quartz at 25^oC

nitrogen at 75^oC

steel at 50^oC

water at 10^oC

1

According the the kinetic molecular theory of gases, the particles of a gas have

little attractions for each other and a significant volume

strong attractions for each other and an insignificant volume

little attractions for each other and an insignificant volume

strong attractions for each other and a significant volume

1

Which substance is a good conductor of electricity in both the solids and liquid phases?

a molecular substance

an ionic substance

a metallic substance

a network substance

1

A chemist performs the same tests on two homogeneous white crystalline solids, A and B. The results are shown in the accompanying table.
The results of these test suggest that

solid A contains only ionic bonds and solid B contains only covalent bonds.

both solids contain only ionic bonds.

solid A contains only covalent bonds and solid B contains only ionic bonds.

both solids contain only covalent bonds

1

Which kind of energy is stored in a chemical bond?

ionization energy

kinetic energy

activation energy

potential energy

1

Given the reaction:
Zn(s) + 2HCl(aq) --> ZnCl₂(aq) + H₂(g)
Where solid zinc reacts with hydrochloric acid to produce zinc chloride and hydrogen gas, the reaction occurs more slowly when a single piece of solid zinc is used instead of the same mass of powdered zinc. Why is this the case?

The powdered zinc is more concentrated

The powdered zinc has more surface area

The powdered zinc generates more heat energy

The powdered zinc required less activation energy

1

Given the above reaction, what is the ratio of moles of H₂ consumed to moles of NH₃ produced?

3:2

2:3

1:2

6:6

1

Given the balanced equation:
NaOH + HCl --> NaCl + H₂O
What is the total number of grams of H₂O produced when 115 grams of the product, NaCl, is formed?

54 g

18 g

9.0 g

36 g

1

What is the total mass of oxygen in 1.00 mole of Al₂(CrO₄)₃?

112 g

64.0 g

192 g

48.0 g

1

The specific heat of wood is about 1,700 J/kg^oC. How much energy is required in joules to heat a 12 kg piece of wood from 20^oC to 30^oC?

204,000 J

1,400 J

612,000 J

17,000 J

1

If a 500.0-g block of metal absorbs 5,016 J of heat when its temperature changes from 20.00^oC to 45.00^oC, what is its specific heat?

4.18 J/g ^oC

0.401 J/g ^oC

2.49 J/g ^oC

1.00 J/g ^oC

	Ionic	Covalent	Both Ionic and Covalent
AlCl₃
Iron (II) Oxide
NO₂
H₂SO₄
CaCO₃
C₂H₅OH

	AB	BC	CD	DE	EF
Boiling point
Gas
Solid
Liquid
mixture of solid and liquid
1500 ^oC
2500 ^oC

	Ionic	Covalent	Both Ionic and Covalent
AlCl₃
Iron (II) Oxide
NO₂
H₂SO₄
CaCO₃
C₂H₅OH

	AB	BC	CD	DE	EF
Boiling point
Gas
Solid
Liquid
mixture of solid and liquid
1500 ^oC
2500 ^oC

Franck CP Chemistry Semester 2 Exam 2024

Use the diagram to answer the following question.How many bonds are made by each carbon atom in the molecule shown above?

Two elements in a molecule have the same electronegativity values. Which of the following most likely holds the elements together and why?

Categorize the following items as being either endothermic or exothermic.

Match the element to the correct number of valence electrons

In the molecule below, which atom has the largest partial negative charge __________?

Show how to calculate how many moles of carbon dioxide there are when you have 52.06 g of carbon dioxide (CO2), and choose the correct answer. (Choose 2 selections from below)

Which reaction diagram shows the effect of using the appropriate catalyst in a chemical reaction?

In a sealed bottle that is half full of water, equilibrium will be reached when water molecules

In the chemical reaction shown below, all of the HCl and Zn will react to form H2 and ZnCl2Which of the following statements describes the result of this reaction?

When a steel block at 100oC is placed on top of a copper block at 20oC, the thermal energy of the copper begins to increase. Which of the following is the source of this increase in energy?

A popcorn kernel is up to 13% water. The drawing above shows a kernel of corn that is heated until it pops. Which of the following best explains what happens to the liquid water stored inside the kernel that leads to the popping process?

Select which type of bond is being formed in the following substances.

Which of the following objects transfers its energy primarily by radiation?

Which of the following is the best example of heat transfer by convection?

Which of the following has the lowest average molecular kinetic energy?

According the the kinetic molecular theory of gases, the particles of a gas have

Which substance is a good conductor of electricity in both the solids and liquid phases?

A chemist performs the same tests on two homogeneous white crystalline solids, A and B. The results are shown in the accompanying table.The results of these test suggest that

Which kind of energy is stored in a chemical bond?

Given the reaction:Zn(s) + 2HCl(aq) --> ZnCl2(aq) + H2(g)Where solid zinc reacts with hydrochloric acid to produce zinc chloride and hydrogen gas, the reaction occurs more slowly when a single piece of solid zinc is used instead of the same mass of powdered zinc. Why is this the case?

Given the above reaction, what is the ratio of moles of H2 consumed to moles of NH3 produced?

Given the balanced equation:NaOH + HCl --> NaCl + H2OWhat is the total number of grams of H2O produced when 115 grams of the product, NaCl, is formed?

What is the total mass of oxygen in 1.00 mole of Al2(CrO4)3?

The specific heat of wood is about 1,700 J/kgoC. How much energy is required in joules to heat a 12 kg piece of wood from 20oC to 30oC?

If a 500.0-g block of metal absorbs 5,016 J of heat when its temperature changes from 20.00oC to 45.00oC, what is its specific heat?

Use the diagram to answer the following question.How many bonds are made by each carbon atom in the molecule shown above?

Two elements in a molecule have the same electronegativity values. Which of the following most likely holds the elements together and why?

Categorize the following items as being either endothermic or exothermic.

Match the element to the correct number of valence electrons

In the molecule below, which atom has the largest partial negative charge __________?

Show how to calculate how many moles of carbon dioxide there are when you have 52.06 g of carbon dioxide (CO2), and choose the correct answer. (Choose 2 selections from below)

Which reaction diagram shows the effect of using the appropriate catalyst in a chemical reaction?

In a sealed bottle that is half full of water, equilibrium will be reached when water molecules

In the chemical reaction shown below, all of the HCl and Zn will react to form H2 and ZnCl2Which of the following statements describes the result of this reaction?

When a steel block at 100oC is placed on top of a copper block at 20oC, the thermal energy of the copper begins to increase. Which of the following is the source of this increase in energy?

A popcorn kernel is up to 13% water. The drawing above shows a kernel of corn that is heated until it pops. Which of the following best explains what happens to the liquid water stored inside the kernel that leads to the popping process?

Select which type of bond is being formed in the following substances.

Correctly answer the questions about the heating curve below. There are 5 columns to categorize. You need to scroll over to see them all.

Which of the following objects transfers its energy primarily by radiation?

Which of the following is the best example of heat transfer by convection?

Which of the following has the lowest average molecular kinetic energy?

According the the kinetic molecular theory of gases, the particles of a gas have

Which substance is a good conductor of electricity in both the solids and liquid phases?

A chemist performs the same tests on two homogeneous white crystalline solids, A and B. The results are shown in the accompanying table.The results of these test suggest that

Which kind of energy is stored in a chemical bond?

Given the reaction:Zn(s) + 2HCl(aq) --> ZnCl2(aq) + H2(g)Where solid zinc reacts with hydrochloric acid to produce zinc chloride and hydrogen gas, the reaction occurs more slowly when a single piece of solid zinc is used instead of the same mass of powdered zinc. Why is this the case?

Given the above reaction, what is the ratio of moles of H2 consumed to moles of NH3 produced?

Given the balanced equation:NaOH + HCl --> NaCl + H2OWhat is the total number of grams of H2O produced when 115 grams of the product, NaCl, is formed?

What is the total mass of oxygen in 1.00 mole of Al2(CrO4)3?

The specific heat of wood is about 1,700 J/kgoC. How much energy is required in joules to heat a 12 kg piece of wood from 20oC to 30oC?

If a 500.0-g block of metal absorbs 5,016 J of heat when its temperature changes from 20.00oC to 45.00oC, what is its specific heat?

Use the diagram to answer the following question.
How many bonds are made by each carbon atom in the molecule shown above?

Show how to calculate how many moles of carbon dioxide there are when you have 52.06 g of carbon dioxide (CO₂), and choose the correct answer. (Choose 2 selections from below)

In the chemical reaction shown below, all of the HCl and Zn will react to form H₂ and ZnCl₂
Which of the following statements describes the result of this reaction?

When a steel block at 100^oC is placed on top of a copper block at 20^oC, the thermal energy of the copper begins to increase. Which of the following is the source of this increase in energy?

A chemist performs the same tests on two homogeneous white crystalline solids, A and B. The results are shown in the accompanying table.
The results of these test suggest that

Given the reaction:
Zn(s) + 2HCl(aq) --> ZnCl₂(aq) + H₂(g)
Where solid zinc reacts with hydrochloric acid to produce zinc chloride and hydrogen gas, the reaction occurs more slowly when a single piece of solid zinc is used instead of the same mass of powdered zinc. Why is this the case?

Given the above reaction, what is the ratio of moles of H₂ consumed to moles of NH₃ produced?

Given the balanced equation:
NaOH + HCl --> NaCl + H₂O
What is the total number of grams of H₂O produced when 115 grams of the product, NaCl, is formed?

What is the total mass of oxygen in 1.00 mole of Al₂(CrO₄)₃?

The specific heat of wood is about 1,700 J/kg^oC. How much energy is required in joules to heat a 12 kg piece of wood from 20^oC to 30^oC?

If a 500.0-g block of metal absorbs 5,016 J of heat when its temperature changes from 20.00^oC to 45.00^oC, what is its specific heat?

Use the diagram to answer the following question.
How many bonds are made by each carbon atom in the molecule shown above?

Show how to calculate how many moles of carbon dioxide there are when you have 52.06 g of carbon dioxide (CO₂), and choose the correct answer. (Choose 2 selections from below)

In the chemical reaction shown below, all of the HCl and Zn will react to form H₂ and ZnCl₂
Which of the following statements describes the result of this reaction?

When a steel block at 100^oC is placed on top of a copper block at 20^oC, the thermal energy of the copper begins to increase. Which of the following is the source of this increase in energy?

A chemist performs the same tests on two homogeneous white crystalline solids, A and B. The results are shown in the accompanying table.
The results of these test suggest that

Given the reaction:
Zn(s) + 2HCl(aq) --> ZnCl₂(aq) + H₂(g)
Where solid zinc reacts with hydrochloric acid to produce zinc chloride and hydrogen gas, the reaction occurs more slowly when a single piece of solid zinc is used instead of the same mass of powdered zinc. Why is this the case?

Given the above reaction, what is the ratio of moles of H₂ consumed to moles of NH₃ produced?

Given the balanced equation:
NaOH + HCl --> NaCl + H₂O
What is the total number of grams of H₂O produced when 115 grams of the product, NaCl, is formed?

What is the total mass of oxygen in 1.00 mole of Al₂(CrO₄)₃?

The specific heat of wood is about 1,700 J/kg^oC. How much energy is required in joules to heat a 12 kg piece of wood from 20^oC to 30^oC?

If a 500.0-g block of metal absorbs 5,016 J of heat when its temperature changes from 20.00^oC to 45.00^oC, what is its specific heat?