Question 1

Steel is formed by

Accepted Answer

A) heating iron at high temperature for a long time. 
B) combining iron, carbon and transition metals such as chromium and nickel. 
C) oxidizing some of the iron to iron oxides. 
D) adding sand and heating to a high temperature. 
A) heating iron at high temperature for a long time. 
B) combining iron, carbon and transition metals such as chromium and nickel. 
C) oxidizing some of the iron to iron oxides. 
D) adding sand and heating to a high temperature. B

Question 2

Every day,the world population goes up by

Accepted Answer

A) 300,000 people. 
B) 200,000 people. 
C) half a million people. 
D) a million people. 
A) 300,000 people. 
B) 200,000 people. 
C) half a million people. 
D) a million people. B

Question 3

Probably the first metal to be freed from its ore by smelting was

Accepted Answer

A) aluminum. 
B) copper. 
C) lead. 
D) iron. 
A) aluminum. 
B) copper. 
C) lead. 
D) iron. B

Question 4

Which of the following is NOT a silicate?

Accepted Answer

A) mica 
B) marble 
C) asbestos 
D) zircon 
A) mica 
B) marble 
C) asbestos 
D) zircon

Question 5

Concrete is a mixture of cement along with

Accepted Answer

A) water. 
B) gravel. 
C) sand and gravel. 
D) sand, gravel, and water. 
A) water. 
B) gravel. 
C) sand and gravel. 
D) sand, gravel, and water.

Question 6

Cement is a complex mixture of

Accepted Answer

A) calcium and aluminum silicates. 
B) sodium and calcium silicates. 
C) selenium and cobalt compounds. 
D) lithium and sodium silicates. 
A) calcium and aluminum silicates. 
B) sodium and calcium silicates. 
C) selenium and cobalt compounds. 
D) lithium and sodium silicates.

Question 7

Discuss energy advantages of using more aluminum and less steel in the construction of a car.

Accepted Answer

Al is lighter,so it will take

Question 8

The largest percentage of solid waste in municipal solid waste is

Accepted Answer

A) glass. 
B) paper and cardboard. 
C) metals. 
D) plastics. 
A) glass. 
B) paper and cardboard. 
C) metals. 
D) plastics.

Question 9

One of the major problems associated with the production of glass is

Accepted Answer

A) the amount of energy required. 
B) the amount of sand required. 
C) the amount of limestone required. 
D) the amount of sodium carbonate. 
A) the amount of energy required. 
B) the amount of sand required. 
C) the amount of limestone required. 
D) the amount of sodium carbonate.

Question 10

As opposed to most solids,when glass is heated,it

Accepted Answer

A) melts rapidly to a liquid over a narrow temperature range. 
B) goes directly into the gas phase; a process known as sublimation. 
C) separates into its individual components. 
D) gradually softens over a wide temperature range. 
A) melts rapidly to a liquid over a narrow temperature range. 
B) goes directly into the gas phase; a process known as sublimation. 
C) separates into its individual components. 
D) gradually softens over a wide temperature range.

Question 11

Great quantities of ________ have been used to insulate furnaces,heating ducts,and steam pipes.

Accepted Answer

A) asbestos 
B) iron 
C) agate 
D) polyester 
A) asbestos 
B) iron 
C) agate 
D) polyester

Question 12

Which of the following correctly summarizes the relative composition of the lithosphere with respect to inorganic and organic material?

Accepted Answer

A) inorganic > organic B) inorganic = organic C) inorganic < organic D) There is no organic matter in the lithosphere. A) inorganic > organic B) inorganic = organic C) inorganic < organic D) There is no organic matter in the lithosphere.

Question 13

The properties of steel can be altered by the addition of metals,such as manganese or chromium,to the alloy.

Accepted Answer

A) True 
 B)False

Question 14

The approximate human population of Earth is more than

Accepted Answer

A) 2 billion. 
B) 12 billion. 
C) 7 billion. 
D) 10 billion. 
A) 2 billion. 
B) 12 billion. 
C) 7 billion. 
D) 10 billion.

Question 15

Steel is an alloy that always contains which metal?

Accepted Answer

A) aluminum 
B) copper 
C) iron 
D) lead 
A) aluminum 
B) copper 
C) iron 
D) lead

Question 16

Which of the following has resulted from the increase in world population?

Accepted Answer

A) better recycling 
B) an increase in waste generation 
C) more plentiful water 
D) more food 
A) better recycling 
B) an increase in waste generation 
C) more plentiful water 
D) more food

Question 17

The basic unit of silicates is

Accepted Answer

A) SiO. 
B) SiO₂. 
C) SiO₃. 
D) SiO₄. 
A) SiO. 
B) SiO₂. 
C) SiO₃. 
D) SiO₄.

Question 18

The organic portion of the lithosphere contains

Accepted Answer

A) soil and fossilized materials. 
B) water. 
C) minerals. 
D) rocks. 
A) soil and fossilized materials. 
B) water. 
C) minerals. 
D) rocks.

Question 19

China produces most of the rare earth metals in the world.

Accepted Answer

A) True 
 B)False

Question 20

When scrap metal is recycled to make new iron and steel products,there is also a reduction in

Accepted Answer

A) energy consumption. 
B) water pollution. 
C) air pollution. 
D) All of the above are reduced. 
A) energy consumption. 
B) water pollution. 
C) air pollution. 
D) All of the above are reduced.

Exam 12: Chemistry of the Earth

Steel is formed by

Every day,the world population goes up by

Probably the first metal to be freed from its ore by smelting was

Which of the following is NOT a silicate?

Concrete is a mixture of cement along with

Cement is a complex mixture of

Discuss energy advantages of using more aluminum and less steel in the construction of a car.

The largest percentage of solid waste in municipal solid waste is

One of the major problems associated with the production of glass is

As opposed to most solids,when glass is heated,it

Great quantities of ________ have been used to insulate furnaces,heating ducts,and steam pipes.

Which of the following correctly summarizes the relative composition of the lithosphere with respect to inorganic and organic material?

The properties of steel can be altered by the addition of metals,such as manganese or chromium,to the alloy.

The approximate human population of Earth is more than

Steel is an alloy that always contains which metal?

Which of the following has resulted from the increase in world population?

The basic unit of silicates is

The organic portion of the lithosphere contains

China produces most of the rare earth metals in the world.

When scrap metal is recycled to make new iron and steel products,there is also a reduction in

Chemistry

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Chemical Accounting

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Oxidation and Reduction

Organic Chemistry

Polymers

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Air

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Energy

Biochemistry

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Fitness and Health

Chemistry Down on the Farm

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