Question 1

In the activity series, Zn is more active than Pb. This means that

Accepted Answer

A)  Zn is a better catalyst than Pb. 
B)  Zn loses its electrons more easily than Pb. 
C)  Pb is more readily oxidized than Zn. 
D)  none of these 
A)  Zn is a better catalyst than Pb. 
B)  Zn loses its electrons more easily than Pb. 
C)  Pb is more readily oxidized than Zn. 
D)  none of these

Question 2

Which of the following is a strong acid?

Accepted Answer

A)  Citric acid 
B)  Nitric acid 
C)  Phosphoric acid 
D)  Acetic acid 
A)  Citric acid 
B)  Nitric acid 
C)  Phosphoric acid 
D)  Acetic acid

Question 3

Complete and balance the equation: Ba(NO3)2(aq) + K2CO3(aq) $\to$ ________

Accepted Answer

Ba(NO₃)₂

Question 4

The reaction Fe + CuSO4 $\to$ Cu + FeSO4 is a(n) ________________-replacement reaction.

Accepted Answer

The answer of The reaction Fe + CuSO4 $\to$ Cu...

Question 5

Acids give what ions in aqueous solutions?

Accepted Answer

A)  SO42- 
B)  Cl- 
C)  OH- 
D)  H+ 
A)  SO42- 
B)  Cl- 
C)  OH- 
D)  H+

Question 6

How many molecules are in 1.00 mol of sulfur dioxide, SO2?

Accepted Answer

A)  64.1 
B)  64.1 $\times$ 6.02 $\times$ 1023 
C)  12.0 $\times$ 1023 
D)  6.02 $\times$ 1023 
A)  64.1 
B)  64.1 $\times$ 6.02 $\times$ 1023 
C)  12.0 $\times$ 1023 
D)  6.02 $\times$ 1023

Question 7

A solution with a pH of 6 is

Accepted Answer

A)  strongly acidic. 
B)  weakly basic. 
C)  strongly basic. 
D)  weakly acidic. 
A)  strongly acidic. 
B)  weakly basic. 
C)  strongly basic. 
D)  weakly acidic.

Question 8

Which of the following is a chemical change?

Accepted Answer

A)  Dry ice subliming 
B)  Limestone being crushed to powder 
C)  Paper being shredded 
D)  Sulfur burning 
A)  Dry ice subliming 
B)  Limestone being crushed to powder 
C)  Paper being shredded 
D)  Sulfur burning

Question 9

The energy necessary to start a chemical reaction is called the ______________ energy.

Accepted Answer

A)  exothermic 
B)  activation 
C)  endothermic 
D)  combustion 
A)  exothermic 
B)  activation 
C)  endothermic 
D)  combustion

Question 10

In the reaction 2Al + 3F2 $\to$ 2AlF3, the aluminum

Accepted Answer

A)  is reduced. 
B)  gains electrons. 
C)  is oxidized. 
D)  is the catalyst. 
A)  is reduced. 
B)  gains electrons. 
C)  is oxidized. 
D)  is the catalyst.

Question 11

A compound that contains water molecules as part of its formula is called

Accepted Answer

A)  a hydrate. 
B)  an anhydride. 
C)  a hydride. 
D)  a hydroxide. 
A)  a hydrate. 
B)  an anhydride. 
C)  a hydride. 
D)  a hydroxide.

Question 12

A solution with a pH of 1 is

Accepted Answer

A)  strongly acidic. 
B)  weakly basic. 
C)  strongly basic. 
D)  weakly acidic. 
A)  strongly acidic. 
B)  weakly basic. 
C)  strongly basic. 
D)  weakly acidic.

Question 13

Changes that do not alter the chemical composition of a substance are called ______________ changes.

Accepted Answer

The answer of Changes that do not alter the chemical...

Question 14

A substance that increases the rate of a chemical reaction but is not consumed in the reaction is called

Accepted Answer

A)  an oxidizing agent. 
B)  a catalyst. 
C)  an activation agent. 
D)  a reducing agent. 
A)  an oxidizing agent. 
B)  a catalyst. 
C)  an activation agent. 
D)  a reducing agent.

Question 15

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

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 a pH of 14 is

Accepted Answer

A)  strongly acidic. 
B)  weakly basic. 
C)  strongly basic. 
D)  weakly acidic. 
A)  strongly acidic. 
B)  weakly basic. 
C)  strongly basic. 
D)  weakly acidic.

Question 17

When the equation Al + O2$\to$  Al2O3 is balanced, the coefficient of Al is

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
A)  1 
B)  2 
C)  3 
D)  4

Question 18

A solution with a pH of 8 is

Accepted Answer

A)  strongly acidic. 
B)  weakly basic. 
C)  strongly basic. 
D)  weakly acidic. 
A)  strongly acidic. 
B)  weakly basic. 
C)  strongly basic. 
D)  weakly acidic.

Question 19

The equation 1/2 N2 + 3/2 H2 $\to$NH3 is not appropriately written because

Accepted Answer

A)  the number of atoms of each element on each side is not the same. 
B)  fractional coefficients are not generally used. 
C)  nitrogen is not diatomic. 
D)  the product is N2H4, not NH3. 
A)  the number of atoms of each element on each side is not the same. 
B)  fractional coefficients are not generally used. 
C)  nitrogen is not diatomic. 
D)  the product is N2H4, not NH3.

Question 20

Which one of the following is a physical change?

Accepted Answer

A)  Rusting of iron 
B)  Fermenting of grape juice 
C)  Souring of milk 
D)  Sharpening a pencil 
A)  Rusting of iron 
B)  Fermenting of grape juice 
C)  Souring of milk 
D)  Sharpening a pencil

In the activity series, Zn is more active than Pb. This means that

Which of the following is a strong acid?

Complete and balance the equation: Ba(NO₃)₂(aq) + K₂CO₃(aq) $\to$ ________

The reaction Fe + CuSO₄ $\to$ Cu + FeSO₄ is a(n) ________________-replacement reaction.

Acids give what ions in aqueous solutions?

How many molecules are in 1.00 mol of sulfur dioxide, SO₂?

A solution with a pH of 6 is

Which of the following is a chemical change?

The energy necessary to start a chemical reaction is called the ______________ energy.

In the reaction 2Al + 3F₂ $\to$ 2AlF₃, the aluminum

A compound that contains water molecules as part of its formula is called

A solution with a pH of 1 is

Changes that do not alter the chemical composition of a substance are called ______________ changes.

A substance that increases the rate of a chemical reaction but is not consumed in the reaction is called

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

A solution with a pH of 14 is

When the equation Al + O₂ $\to$ Al₂O₃is balanced, the coefficient of Al is

A solution with a pH of 8 is

The equation 1/2 N₂ + 3/2 H₂ $\to$ NH₃ is not appropriately written because

Which one of the following is a physical change?

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

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Exam 13: The Solar System

In the activity series, Zn is more active than Pb. This means that

Which of the following is a strong acid?

Complete and balance the equation: Ba(NO3)2(aq) + K2CO3(aq) →\to→ ________

The reaction Fe + CuSO4 →\to→ Cu + FeSO4 is a(n) ________________-replacement reaction.

Acids give what ions in aqueous solutions?

How many molecules are in 1.00 mol of sulfur dioxide, SO2?

A solution with a pH of 6 is

Which of the following is a chemical change?

The energy necessary to start a chemical reaction is called the ______________ energy.

In the reaction 2Al + 3F2 →\to→ 2AlF3, the aluminum

A compound that contains water molecules as part of its formula is called

A solution with a pH of 1 is

Changes that do not alter the chemical composition of a substance are called ______________ changes.

A substance that increases the rate of a chemical reaction but is not consumed in the reaction is called

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

A solution with a pH of 14 is

When the equation Al + O2 →\to→ Al2O3 is balanced, the coefficient of Al is

A solution with a pH of 8 is

The equation 1/2 N2 + 3/2 H2 →\to→ NH3 is not appropriately written because

Which one of the following is a physical change?

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

Complete and balance the equation: Ba(NO₃)₂(aq) + K₂CO₃(aq) $\to$ ________

The reaction Fe + CuSO₄ $\to$ Cu + FeSO₄ is a(n) ________________-replacement reaction.

How many molecules are in 1.00 mol of sulfur dioxide, SO₂?

In the reaction 2Al + 3F₂ $\to$ 2AlF₃, the aluminum

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

When the equation Al + O₂ $\to$ Al₂O₃is balanced, the coefficient of Al is

The equation 1/2 N₂ + 3/2 H₂ $\to$ NH₃ is not appropriately written because