Question 1

When you inhale (breathe in), oxygen is entering your respiratory system and when you exhale (breathe out), carbon dioxide is leaving your respiratory system.

Accepted Answer

A) True 
 B)False

Question 2

Decreasing the temperature will decrease the number of collisions that result in product formation.

Accepted Answer

A) True 
 B)False

Question 3

Complete each of the following sentences using one of the terms listed below.
physical change
chemical change
reactant
product
coefficient
physical state
-In the image below hydrogen sulfide represents the________________.

Accepted Answer

The answer of Complete each of the following sentences using...

Question 4

When magnesium reacts with nitrogen, the reaction container becomes very hot. The ΔH for this reaction will have a positive sign.

Accepted Answer

A) True 
 B)False

Question 5

Copper reacts with nitric acid as given in the following reaction.   Predict the effect of the given change on the rate of the reaction by filling in the blank with one of the following terms.
increase
decrease
no effect
-The temperature of the reaction is decreased. _____________________

Accepted Answer

The answer of Copper reacts with nitric acid as given...

Question 6

Complete the following sentence using the terms provided below.
nutritive value
carbohydrate
protein
fat
Calorie
kilocalorie
energy content
-_______________________refers to the characteristic amount of heat produced when a nutrient is burned.

Accepted Answer

Nutritive

Question 7

Overall the reactions that occur during respiration can be classified as combustion reactions.

Accepted Answer

A) True 
 B)False

Question 8

Consider the following image representing an equilibrium mixture. The black spheres represent the reactant and the gray spheres the product.   This reaction was started with only reactants present. If the reaction had been started with only product present, the equilibrium mixture would contain 4 gray spheres and 8 black spheres.

Accepted Answer

A) True 
 B)False

Question 9

Consider the following image.   
This is a representation of a chemical reaction.

Accepted Answer

A) True 
 B)False

Question 10

Complete each of the following sentences using one of the terms listed below.
physical change
chemical change
reactant
product
coefficient
physical state
-The image below represents a________________.

Accepted Answer

The answer of Complete each of the following sentences using...

Question 11

Consider the following reaction. 
NaOH(aq) + H2SO4(aq) → Na2SO4(aq) + H2O(l)
Which of the following represents the correct mass relationships, respectively, across the balanced equation?

Accepted Answer

A) 40.00 g NaOH, 98.08 g H2SO4, 142.04 g Na2SO4, 18.02 g H2O 
B) 40.00 g NaOH, 40.04 g H2SO4, 142.04 g Na2SO4, 9.010 g H2O 
C) 80.00 g NaOH, 98.08 g H2SO4, 142.04 g Na2SO4, 36.04 g H2O 
D) 80.00 g NaOH, 98.08 g H2SO4, 142.04 g Na2SO4, 18.02 g H2O 
A) 40.00 g NaOH, 98.08 g H2SO4, 142.04 g Na2SO4, 18.02 g H2O 
B) 40.00 g NaOH, 40.04 g H2SO4, 142.04 g Na2SO4, 9.010 g H2O 
C) 80.00 g NaOH, 98.08 g H2SO4, 142.04 g Na2SO4, 36.04 g H2O 
D) 80.00 g NaOH, 98.08 g H2SO4, 142.04 g Na2SO4, 18.02 g H2O

Question 12

Which of the following is the best definition of a catalyst?

Accepted Answer

A) A catalyst is a material that speeds up the rate of a chemical reaction. 
B) A catalyst is a material that speeds up the rate of a chemical reaction without participating in the reaction. 
C) A catalyst is a material that speeds up the rate of a chemical reaction without being consumed during the reaction. 
D) All of the above are equally good definitions. 
A) A catalyst is a material that speeds up the rate of a chemical reaction. 
B) A catalyst is a material that speeds up the rate of a chemical reaction without participating in the reaction. 
C) A catalyst is a material that speeds up the rate of a chemical reaction without being consumed during the reaction. 
D) All of the above are equally good definitions.

Question 13

Copper reacts with nitric acid as given in the following reaction.   Predict the effect of the given change on the rate of the reaction by filling in the blank with one of the following terms.
increase
decrease
no effect
-The copper metal is ground into a very fine powder. ______________________

Accepted Answer

The answer of Copper reacts with nitric acid as given...

Question 14

Ethanol is produced industrially by the acid catalyzed reaction of ethylene with water. The balanced equation for this reaction is:
C2H4(g) + H2O(g) → C2H5OH(l)
If water is present in excess, how many grams of ethanol can be produced from 5.75 g of ethylene?

Accepted Answer

A) 265 g 
B) 0.205 g 
C) 3.50 g 
D) 9.44 g 
A) 265 g 
B) 0.205 g 
C) 3.50 g 
D) 9.44 g

Question 15

Which of the following most closely defines the term "reaction rate"?

Accepted Answer

A) the temperature needed to initiate a reaction 
B) the position of a reaction at equilibrium 
C) the speed of a reaction 
D) the activation energy in the presence of a catalyst 
A) the temperature needed to initiate a reaction 
B) the position of a reaction at equilibrium 
C) the speed of a reaction 
D) the activation energy in the presence of a catalyst

Question 16

Copper reacts with nitric acid as given in the following reaction.   Predict the effect of the given change on the rate of the reaction by filling in the blank with one of the following terms.
increase
decrease
no effect
-A catalyst is added to the reaction mixture. ____________________

Accepted Answer

The answer of Copper reacts with nitric acid as given...

Question 17

In the equation for an exothermic reaction, the word "energy" appears

Accepted Answer

A) on the right side. 
B) on the left side. 
C) on both sides. 
D) on neither side. 
A) on the right side. 
B) on the left side. 
C) on both sides. 
D) on neither side.

Question 18

If the 'Nutrition Facts' on a food label contains Total Fat 5.0 g, Total Carbohydrate 35 g, and Total Protein 7.0 g, how many Total kcal would be needed for the average healthy person to burn this food item?

Accepted Answer

A) 1.8 × 102 kcal 
B) 2.1 × 102 kcal 
C) 4.2 × 102 kcal 
D) 4.0 × 102 kcal 
A) 1.8 × 102 kcal 
B) 2.1 × 102 kcal 
C) 4.2 × 102 kcal 
D) 4.0 × 102 kcal

Question 19

Consider the following energy diagram showing a reaction with and without a catalyst..   
Fill in the blank with the appropriate letter (A,B,C,etc.).
-The lowering of the activation energy by the catalyst is represented by__________________.

Accepted Answer

The answer of Consider the following energy diagram showing a...

Question 20

When 15.0 g of sucrose is burned during metabolism in the body according to the following equation, what mass in grams of oxygen is needed?

Accepted Answer

The answer of When 15.0 g of sucrose is burned...

When you inhale (breathe in), oxygen is entering your respiratory system and when you exhale (breathe out), carbon dioxide is leaving your respiratory system.

Decreasing the temperature will decrease the number of collisions that result in product formation.

Complete each of the following sentences using one of the terms listed below. physical change chemical change reactant product coefficient physical state -In the image below hydrogen sulfide represents the________________.

When magnesium reacts with nitrogen, the reaction container becomes very hot. The ΔH for this reaction will have a positive sign.

Copper reacts with nitric acid as given in the following reaction. Predict the effect of the given change on the rate of the reaction by filling in the blank with one of the following terms. increase decrease no effect -The temperature of the reaction is decreased. _____________________

Complete the following sentence using the terms provided below. nutritive value carbohydrate protein fat Calorie kilocalorie energy content -_______________________refers to the characteristic amount of heat produced when a nutrient is burned.

Overall the reactions that occur during respiration can be classified as combustion reactions.

Consider the following image. This is a representation of a chemical reaction.

Complete each of the following sentences using one of the terms listed below. physical change chemical change reactant product coefficient physical state -The image below represents a________________.

Consider the following reaction. NaOH(aq) + H₂SO₄(aq) → Na₂SO₄(aq) + H₂O(l) Which of the following represents the correct mass relationships, respectively, across the balanced equation?

Which of the following is the best definition of a catalyst?

Copper reacts with nitric acid as given in the following reaction. Predict the effect of the given change on the rate of the reaction by filling in the blank with one of the following terms. increase decrease no effect -The copper metal is ground into a very fine powder. ______________________

Ethanol is produced industrially by the acid catalyzed reaction of ethylene with water. The balanced equation for this reaction is: C₂H₄(g) + H₂O(g) → C₂H₅OH(l) If water is present in excess, how many grams of ethanol can be produced from 5.75 g of ethylene?

Which of the following most closely defines the term "reaction rate"?

Copper reacts with nitric acid as given in the following reaction. Predict the effect of the given change on the rate of the reaction by filling in the blank with one of the following terms. increase decrease no effect -A catalyst is added to the reaction mixture. ____________________

In the equation for an exothermic reaction, the word "energy" appears

If the 'Nutrition Facts' on a food label contains Total Fat 5.0 g, Total Carbohydrate 35 g, and Total Protein 7.0 g, how many Total kcal would be needed for the average healthy person to burn this food item?

Consider the following energy diagram showing a reaction with and without a catalyst.. Fill in the blank with the appropriate letter (A,B,C,etc.). -The lowering of the activation energy by the catalyst is represented by__________________.

When 15.0 g of sucrose is burned during metabolism in the body according to the following equation, what mass in grams of oxygen is needed?

Measurements in Science and Medicine

Atoms, Elements, and Compounds

Chemical Bonds

Energy and Physical Properties

Solution Concentration

Acids and Bases

Nuclear Chemistry

Hydrocarbons: An Introduction to Organic Molecules

Hydration, Dehydration, and Alcohols

Carbonyl Compounds and Redox Reactions

Organic Acids and Bases

Condensation and Hydrolysis Reactions

Proteins

Carbohydrates

Lipids and Membranes

Nucleic Acids, Protein Synthesis, and Heredity

Filters

Exam 6: Chemical Reactions

When you inhale (breathe in), oxygen is entering your respiratory system and when you exhale (breathe out), carbon dioxide is leaving your respiratory system.

Decreasing the temperature will decrease the number of collisions that result in product formation.

Complete each of the following sentences using one of the terms listed below. physical change chemical change reactant product coefficient physical state -In the image below hydrogen sulfide represents the________________.

When magnesium reacts with nitrogen, the reaction container becomes very hot. The ΔH for this reaction will have a positive sign.

Copper reacts with nitric acid as given in the following reaction. Predict the effect of the given change on the rate of the reaction by filling in the blank with one of the following terms. increase decrease no effect -The temperature of the reaction is decreased. _____________________

Complete the following sentence using the terms provided below. nutritive value carbohydrate protein fat Calorie kilocalorie energy content -_______________________refers to the characteristic amount of heat produced when a nutrient is burned.

Overall the reactions that occur during respiration can be classified as combustion reactions.

Consider the following image. This is a representation of a chemical reaction.

Complete each of the following sentences using one of the terms listed below. physical change chemical change reactant product coefficient physical state -The image below represents a________________.

Consider the following reaction. NaOH(aq) + H2SO4(aq) → Na2SO4(aq) + H2O(l) Which of the following represents the correct mass relationships, respectively, across the balanced equation?

Which of the following is the best definition of a catalyst?

Copper reacts with nitric acid as given in the following reaction. Predict the effect of the given change on the rate of the reaction by filling in the blank with one of the following terms. increase decrease no effect -The copper metal is ground into a very fine powder. ______________________

Ethanol is produced industrially by the acid catalyzed reaction of ethylene with water. The balanced equation for this reaction is: C2H4(g) + H2O(g) → C2H5OH(l) If water is present in excess, how many grams of ethanol can be produced from 5.75 g of ethylene?

Which of the following most closely defines the term "reaction rate"?

Copper reacts with nitric acid as given in the following reaction. Predict the effect of the given change on the rate of the reaction by filling in the blank with one of the following terms. increase decrease no effect -A catalyst is added to the reaction mixture. ____________________

In the equation for an exothermic reaction, the word "energy" appears

If the 'Nutrition Facts' on a food label contains Total Fat 5.0 g, Total Carbohydrate 35 g, and Total Protein 7.0 g, how many Total kcal would be needed for the average healthy person to burn this food item?

Consider the following energy diagram showing a reaction with and without a catalyst.. Fill in the blank with the appropriate letter (A,B,C,etc.). -The lowering of the activation energy by the catalyst is represented by__________________.

When 15.0 g of sucrose is burned during metabolism in the body according to the following equation, what mass in grams of oxygen is needed?

Measurements in Science and Medicine

Atoms, Elements, and Compounds

Chemical Bonds

Energy and Physical Properties

Solution Concentration

Acids and Bases

Nuclear Chemistry

Hydrocarbons: An Introduction to Organic Molecules

Hydration, Dehydration, and Alcohols

Carbonyl Compounds and Redox Reactions

Organic Acids and Bases

Condensation and Hydrolysis Reactions

Proteins

Carbohydrates

Lipids and Membranes

Nucleic Acids, Protein Synthesis, and Heredity

Filters

Consider the following reaction. NaOH(aq) + H₂SO₄(aq) → Na₂SO₄(aq) + H₂O(l) Which of the following represents the correct mass relationships, respectively, across the balanced equation?

Ethanol is produced industrially by the acid catalyzed reaction of ethylene with water. The balanced equation for this reaction is: C₂H₄(g) + H₂O(g) → C₂H₅OH(l) If water is present in excess, how many grams of ethanol can be produced from 5.75 g of ethylene?