Question 1

When solutions of AgNO3  and CaCl2 are mixed, which type of reaction is likely?

Accepted Answer

A)  Combination 
B)  Double-replacement 
C)  Decomposition 
D)  Single-replacement 
A)  Combination 
B)  Double-replacement 
C)  Decomposition 
D)  Single-replacement

Question 2

How many atoms are in 1.00 mol of Mg?

Accepted Answer

A)  24.3 
B)  6.02 $\times$ 1023 
C)  24.3 $\times$ 6.02 $\times$ 1023 
D)  24.3 $\times$ 1023 
A)  24.3 
B)  6.02 $\times$ 1023 
C)  24.3 $\times$ 6.02 $\times$ 1023 
D)  24.3 $\times$ 1023

Question 3

Complete and balance the following equations:
a. HNO3 + Ba(OH)2 $\to$_________
b. H3PO4 + CaCO3 $\to$__________

Accepted Answer

a. 2HNO₃ + Ba(OH)₂

Question 4

The definitions of an acid and a base as substances that give H+ and OH- ions, respectively, in water were proposed by the chemist named ______________.

Accepted Answer

Question 5

What is the molarity of a solution that contains 2 mol of solute in 4 L of solution?

Accepted Answer

The answer of What is the molarity of a solution...

Question 6

6.02 $\times$ 1023 is known as ______________________.

Accepted Answer

The answer of 6.02 $\times$ 1023 is known as ______________________....

Question 7

A chemical reaction is balanced by applying all except which of the following principles?

Accepted Answer

A)  No atoms are gained, lost, or changed in identity. 
B)  Only the numbers preceding formulas can be changed. 
C)  The set of smallest whole numbers should be used. 
D)  Subscripts in the formulas may be changed if necessary. 
A)  No atoms are gained, lost, or changed in identity. 
B)  Only the numbers preceding formulas can be changed. 
C)  The set of smallest whole numbers should be used. 
D)  Subscripts in the formulas may be changed if necessary.

Question 8

The coefficients needed to balance the reaction Sb2S3 + HCl $\to$  SbCl3 + H2S are, respectively,

Accepted Answer

A)  1, 2, 1, and 1. 
B)  2, 1, 3, and 1. 
C)  1, 2, 1, and 3. 
D)  1, 6, 2, and 3. 
E)  1, 1, 1, and 1. 
A)  1, 2, 1, and 1. 
B)  2, 1, 3, and 1. 
C)  1, 2, 1, and 3. 
D)  1, 6, 2, and 3. 
E)  1, 1, 1, and 1.

Question 9

In general, slow reactions

Accepted Answer

A)  are exothermic. 
B)  are endothermic. 
C)  have low activation energies. 
D)  have high activation energies. 
A)  are exothermic. 
B)  are endothermic. 
C)  have low activation energies. 
D)  have high activation energies.

Question 10

A weak acid is one that does not

Accepted Answer

A)  taste very sour. 
B)  ionize appreciably in water. 
C)  form hydrogen gas when a metal is dropped in. 
D)  neutralize OH- ions. 
A)  taste very sour. 
B)  ionize appreciably in water. 
C)  form hydrogen gas when a metal is dropped in. 
D)  neutralize OH- ions.

Question 11

The equation 1H2SO4 $\to$  1H2O + 4O2 is not appropriately written because

Accepted Answer

A)  oxygen is not diatomic. 
B)  fractional coefficients are not generally used. 
C)  the number of atoms of each element on each side is not the same. 
D)  the simplest set of coefficients has not been used. 
A)  oxygen is not diatomic. 
B)  fractional coefficients are not generally used. 
C)  the number of atoms of each element on each side is not the same. 
D)  the simplest set of coefficients has not been used.

Question 12

The coefficients needed to balance the equation Ga + Br2 $\to$ GaBr3 are, respectively,

Accepted Answer

A)  4, 3, and 2. 
B)  2, 3, and 2. 
C)  1, 3, and 2. 
D)  2, 1, and 2. 
A)  4, 3, and 2. 
B)  2, 3, and 2. 
C)  1, 3, and 2. 
D)  2, 1, and 2.

Question 13

A substance that speeds up a chemical reaction but is not consumed is a(n) ______________.

Accepted Answer

The answer of A substance that speeds up a chemical...

Question 14

One product of photosynthesis is

Accepted Answer

A)  hydrogen. 
B)  oxygen. 
C)  carbon dioxide. 
D)  methane. 
A)  hydrogen. 
B)  oxygen. 
C)  carbon dioxide. 
D)  methane.

Question 15

What basic type of reaction is illustrated by the general equation AB $\to$   A + B?

Accepted Answer

A)  Combination 
B)  Decomposition 
C)  Double-replacement 
D)  Single-replacement 
A)  Combination 
B)  Decomposition 
C)  Double-replacement 
D)  Single-replacement

Question 16

A solution with pH greater than 7 is classified as a(n) ______________.

Accepted Answer

The answer of A solution with pH greater than 7...

Question 17

Balance the chemical equation: Cu + Al2O3 $\to$ CuO + Al

Accepted Answer

3Cu + Al<s

Question 18

Which of the following is a weak acid?

Accepted Answer

A)  Hydrochloric acid 
B)  Nitric acid 
C)  Sulfuric acid 
D)  Acetic acid 
A)  Hydrochloric acid 
B)  Nitric acid 
C)  Sulfuric acid 
D)  Acetic acid

Question 19

The rate of a chemical reaction would be increased by

Accepted Answer

A)  increasing the surface area of the reactants. 
B)  increasing the concentration of the reactants. 
C)  adding a catalyst to the reactants. 
D)  heating the reactants. 
E)  all of the above. 
A)  increasing the surface area of the reactants. 
B)  increasing the concentration of the reactants. 
C)  adding a catalyst to the reactants. 
D)  heating the reactants. 
E)  all of the above.

Question 20

All but the most inactive metals react with acids to give

Accepted Answer

A)  hydrogen and the metal salt. 
B)  hydrogen and the metal hydroxide. 
C)  hydrogen and the metal oxide. 
D)  oxygen and the metal hydride. 
A)  hydrogen and the metal salt. 
B)  hydrogen and the metal hydroxide. 
C)  hydrogen and the metal oxide. 
D)  oxygen and the metal hydride.

When solutions of AgNO₃ and CaCl₂ are mixed, which type of reaction is likely?

How many atoms are in 1.00 mol of Mg?

Complete and balance the following equations: a. HNO₃ + Ba(OH)₂ $\to$ _ b. H₃PO₄ + CaCO₃ $\to$ __

The definitions of an acid and a base as substances that give H⁺ and OH^- ions, respectively, in water were proposed by the chemist named ______________.

What is the molarity of a solution that contains 2 mol of solute in 4 L of solution?

6.02 $\times$ 10²³ is known as ______________________.

A chemical reaction is balanced by applying all except which of the following principles?

The coefficients needed to balance the reaction Sb₂S₃ + HCl $\to$ SbCl₃ + H₂S are, respectively,

In general, slow reactions

A weak acid is one that does not

The equation 1H₂SO₄ $\to$ 1H₂O + 4O₂ is not appropriately written because

The coefficients needed to balance the equation Ga + Br₂ $\to$ GaBr₃ are, respectively,

A substance that speeds up a chemical reaction but is not consumed is a(n) ______________.

One product of photosynthesis is

What basic type of reaction is illustrated by the general equation AB $\to$ A + B?

A solution with pH greater than 7 is classified as a(n) ______________.

Balance the chemical equation: Cu + Al₂O₃ $\to$ CuO + Al

Which of the following is a weak acid?

The rate of a chemical reaction would be increased by

All but the most inactive metals react with acids to give

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The Chemical Elements

Chemical Bonding

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Exam 13: The Solar System

When solutions of AgNO3 and CaCl2 are mixed, which type of reaction is likely?

How many atoms are in 1.00 mol of Mg?

Complete and balance the following equations: a. HNO3 + Ba(OH)2 →\to→ _________ b. H3PO4 + CaCO3 →\to→ __________

The definitions of an acid and a base as substances that give H+ and OH- ions, respectively, in water were proposed by the chemist named ______________.

What is the molarity of a solution that contains 2 mol of solute in 4 L of solution?

6.02 ×\times× 1023 is known as ______________________.

A chemical reaction is balanced by applying all except which of the following principles?

The coefficients needed to balance the reaction Sb2S3 + HCl →\to→ SbCl3 + H2S are, respectively,

In general, slow reactions

A weak acid is one that does not

The equation 1H2SO4 →\to→ 1H2O + 4O2 is not appropriately written because

The coefficients needed to balance the equation Ga + Br2 →\to→ GaBr3 are, respectively,

A substance that speeds up a chemical reaction but is not consumed is a(n) ______________.

One product of photosynthesis is

What basic type of reaction is illustrated by the general equation AB →\to→ A + B?

A solution with pH greater than 7 is classified as a(n) ______________.

Balance the chemical equation: Cu + Al2O3 →\to→ CuO + Al

Which of the following is a weak acid?

The rate of a chemical reaction would be increased by

All but the most inactive metals react with acids to give

Temperature and Heat

Waves and Sound

Optics and Wave Effects

Electricity and Magnetism

Atomic Physics

Nuclear Physics

The Chemical Elements

Chemical Bonding

Chemical Reactions

Organic Chemistry

Place and Time

Moons and Small Solar System Bodies

The Universe

The Atmosphere

Atmospheric Effects

Structural Geology and Plate Tectonics

Minerals Rocks and Volcanoes

Surface Processes

Geologic Time

Filters

When solutions of AgNO₃ and CaCl₂ are mixed, which type of reaction is likely?

Complete and balance the following equations: a. HNO₃ + Ba(OH)₂ $\to$ _ b. H₃PO₄ + CaCO₃ $\to$ __

The definitions of an acid and a base as substances that give H⁺ and OH^- ions, respectively, in water were proposed by the chemist named ______________.

6.02 $\times$ 10²³ is known as ______________________.

The coefficients needed to balance the reaction Sb₂S₃ + HCl $\to$ SbCl₃ + H₂S are, respectively,

The equation 1H₂SO₄ $\to$ 1H₂O + 4O₂ is not appropriately written because

The coefficients needed to balance the equation Ga + Br₂ $\to$ GaBr₃ are, respectively,

What basic type of reaction is illustrated by the general equation AB $\to$ A + B?

Balance the chemical equation: Cu + Al₂O₃ $\to$ CuO + Al