Question 1

​Because scientific theories are tentative explanations,they should not be taken seriously.

Accepted Answer

A) True 
 B)False

Question 2

Carbon is an element.​

Accepted Answer

A) True 
 B)False

Question 3

If a carbon atom combines with oxygen atoms to form CO2,this would be described as ____.​

Accepted Answer

A)  ​a physical change 
B)  ​a chemical change 
C)  ​both a physical and chemical change 
D)  ​first a physical change,but then it becomes a chemical change 
E)  ​neither a physical change or a chemical change,but a scientific change 
A)  ​a physical change 
B)  ​a chemical change 
C)  ​both a physical and chemical change 
D)  ​first a physical change,but then it becomes a chemical change 
E)  ​neither a physical change or a chemical change,but a scientific change

Question 4

​A well-tested and widely accepted scientific hypothesis or a group of related hypotheses is called a(n)____________________.

Accepted Answer

The answer of ​A well-tested and widely accepted scientific hypothesis...

Question 5

Match items with their appropriate chemical description.
-The chemical symbol for the element calcium​

Accepted Answer

A) NH4+ 
B) molecule 
C) electron 
D) proton 
E) neutron
F)pH
G)Ca
H)P
I)mass number
J)NO3-
K)C6H12O6 
A) NH4+ 
B) molecule 
C) electron 
D) proton 
E) neutron
F)pH
G)Ca
H)P
I)mass number
J)NO3-
K)C6H12O6

Question 6

The compound represented by the formula CH4 is ____.​

Accepted Answer

A)  ​calcium carbonate 
B)  ​carbon dioxide 
C)  ​methane,a hydrocarbon 
D)  ​sodium chloride 
E)  ​glucose,a simple carbohydrate 
A)  ​calcium carbonate 
B)  ​carbon dioxide 
C)  ​methane,a hydrocarbon 
D)  ​sodium chloride 
E)  ​glucose,a simple carbohydrate

Question 7

Macromolecules formed from a number of monomers are called ____________________.

Accepted Answer

The answer of Macromolecules formed from a number of monomers...

Question 8

Give an example of a positive feedback loop.​

Accepted Answer

​Examples could include: Hubbard Brook e

Question 9

​Flowing water is an example of ____________________ energy.

Accepted Answer

The answer of ​Flowing water is an example of ____________________...

Question 10

Ions are atoms or groups of atoms that have ____.​

Accepted Answer

A)  ​gained or lost electrons 
B)  ​gained or lost protons 
C)  ​gained or lost neutrons 
D)  ​undergone radioactive decay 
E)  ​different numbers of protons and neutrons in the same atom 
A)  ​gained or lost electrons 
B)  ​gained or lost protons 
C)  ​gained or lost neutrons 
D)  ​undergone radioactive decay 
E)  ​different numbers of protons and neutrons in the same atom

Question 11

An acidic solution would have ____.​

Accepted Answer

A)  ​more hydroxide ions than hydrogen ions and a pH greater than 7 
B)  ​more hydrogen ions than hydroxide ions and a pH greater than 7 
C)  ​more hydroxide ions than hydrogen ions and a pH less than 7 
D)  ​more hydroxide ions than hydrogen ions and a pH of 7 
E)  ​more hydrogen ions than hydroxide ions and a pH less than 7 
A)  ​more hydroxide ions than hydrogen ions and a pH greater than 7 
B)  ​more hydrogen ions than hydroxide ions and a pH greater than 7 
C)  ​more hydroxide ions than hydrogen ions and a pH less than 7 
D)  ​more hydroxide ions than hydrogen ions and a pH of 7 
E)  ​more hydrogen ions than hydroxide ions and a pH less than 7

Question 12

Two or more different elements can combine to form isotopes.​

Accepted Answer

A) True 
 B)False

Question 13

Match items with their appropriate chemical description.
-Two or more atoms held together by chemical bonds​

Accepted Answer

A) NH4+ 
B) molecule 
C) electron 
D) proton 
E) neutron
F)pH
G)Ca
H)P
I)mass number
J)NO3-
K)C6H12O6 
A) NH4+ 
B) molecule 
C) electron 
D) proton 
E) neutron
F)pH
G)Ca
H)P
I)mass number
J)NO3-
K)C6H12O6

Question 14

​What are the physical states and chemical forms of matter?

Accepted Answer

​Matter has three physical sta

Question 15

Logic and critical thinking are more important tools in science than imagination and creativity.​

Accepted Answer

A) True 
 B)False

Question 16

Within some DNA molecules are certain sequences of nucleotides called​

Accepted Answer

The answer of Within some DNA molecules are certain sequences...

Question 17

​_____________________ occurs when two isotopes of light elements are forced together at extremely high temperatures until they fuse to form a heavier nucleus.

Accepted Answer

The answer of ​_____________________ occurs when two isotopes of light...

Question 18

List an example of each of the following terms: element,compound,ion,organic compound,simple carbohydrate.

Accepted Answer

Possible answers: Element - ca

Question 19

Recall the Bormann-Likens controlled experiment in the forested valleys of New Hampshire.Which statement best describes the effects of water flowing out of deforested areas into undisturbed areas?​

Accepted Answer

A)  ​The amount of water flowing out of the deforested valley following rain increased by 30-40%,and soil erosion increased. 
B)  ​The amount of water flowing out of the deforested valley decreased by 10-20%,and soil erosion decreased. 
C)  ​The flow of water did not change,but soil erosion increased. 
D)  ​Other types of plants took the place of the trees,preventing deforestation from affecting the flow of water. 
E)  ​Eroding soil dammed up the river,preventing the flow of water. 
A)  ​The amount of water flowing out of the deforested valley following rain increased by 30-40%,and soil erosion increased. 
B)  ​The amount of water flowing out of the deforested valley decreased by 10-20%,and soil erosion decreased. 
C)  ​The flow of water did not change,but soil erosion increased. 
D)  ​Other types of plants took the place of the trees,preventing deforestation from affecting the flow of water. 
E)  ​Eroding soil dammed up the river,preventing the flow of water.

Question 20

Match items with their appropriate chemical description.
-Subatomic particle with a negative charge​

Accepted Answer

A) NH4+ 
B) molecule 
C) electron 
D) proton 
E) neutron
F)pH
G)Ca
H)P
I)mass number
J)NO3-
K)C6H12O6 
A) NH4+ 
B) molecule 
C) electron 
D) proton 
E) neutron
F)pH
G)Ca
H)P
I)mass number
J)NO3-
K)C6H12O6

Because scientific theories are tentative explanations,they should not be taken seriously.

Carbon is an element.

If a carbon atom combines with oxygen atoms to form CO₂,this would be described as ____.

A well-tested and widely accepted scientific hypothesis or a group of related hypotheses is called a(n)____________________.

Match items with their appropriate chemical description. -The chemical symbol for the element calcium

The compound represented by the formula CH₄ is ____.

Macromolecules formed from a number of monomers are called ____________________.

Give an example of a positive feedback loop.

Flowing water is an example of ____________________ energy.

Ions are atoms or groups of atoms that have ____.

An acidic solution would have ____.

Two or more different elements can combine to form isotopes.

Match items with their appropriate chemical description. -Two or more atoms held together by chemical bonds

What are the physical states and chemical forms of matter?

Logic and critical thinking are more important tools in science than imagination and creativity.

Within some DNA molecules are certain sequences of nucleotides called

_____________________ occurs when two isotopes of light elements are forced together at extremely high temperatures until they fuse to form a heavier nucleus.

List an example of each of the following terms: element,compound,ion,organic compound,simple carbohydrate.

Recall the Bormann-Likens controlled experiment in the forested valleys of New Hampshire.Which statement best describes the effects of water flowing out of deforested areas into undisturbed areas?

Match items with their appropriate chemical description. -Subatomic particle with a negative charge

Environmental Problems - Their Causes - and Sustainability

Ecosystems - What Are They and How Do They Work

Biodiversity and Evolution

Biodiversity - Species Interactions - and Population Control

The Human Population and Urbanization

Climate and Biodiversity

Sustaining Biodiversity - the Species Approach

Sustaining Biodiversity - the Ecosystem Approach

Food - Soil - and Pest Management

Water Resources and Water Pollution

Geology and Nonrenewable Minerals

Energy

Environmental Hazards and Human Health

Air Pollution Climate Change and Ozone Depletion

Solid and Hazardous Waste

Environmental Economics Politics and Worldviews

Filters

Exam 2: Science - Matter - and Energy

​Because scientific theories are tentative explanations,they should not be taken seriously.

Carbon is an element.​

If a carbon atom combines with oxygen atoms to form CO2,this would be described as ____.​

​A well-tested and widely accepted scientific hypothesis or a group of related hypotheses is called a(n)____________________.

Match items with their appropriate chemical description. -The chemical symbol for the element calcium​

The compound represented by the formula CH4 is ____.​

Macromolecules formed from a number of monomers are called ____________________.

Give an example of a positive feedback loop.​

​Flowing water is an example of ____________________ energy.

Ions are atoms or groups of atoms that have ____.​

An acidic solution would have ____.​

Two or more different elements can combine to form isotopes.​

Match items with their appropriate chemical description. -Two or more atoms held together by chemical bonds​

​What are the physical states and chemical forms of matter?

Logic and critical thinking are more important tools in science than imagination and creativity.​

Within some DNA molecules are certain sequences of nucleotides called​

​_____________________ occurs when two isotopes of light elements are forced together at extremely high temperatures until they fuse to form a heavier nucleus.

List an example of each of the following terms: element,compound,ion,organic compound,simple carbohydrate.

Recall the Bormann-Likens controlled experiment in the forested valleys of New Hampshire.Which statement best describes the effects of water flowing out of deforested areas into undisturbed areas?​

Match items with their appropriate chemical description. -Subatomic particle with a negative charge​

Environmental Problems - Their Causes - and Sustainability

Ecosystems - What Are They and How Do They Work

Biodiversity and Evolution

Biodiversity - Species Interactions - and Population Control

The Human Population and Urbanization

Climate and Biodiversity

Sustaining Biodiversity - the Species Approach

Sustaining Biodiversity - the Ecosystem Approach

Food - Soil - and Pest Management

Water Resources and Water Pollution

Geology and Nonrenewable Minerals

Energy

Environmental Hazards and Human Health

Air Pollution Climate Change and Ozone Depletion

Solid and Hazardous Waste

Environmental Economics Politics and Worldviews

Filters

Because scientific theories are tentative explanations,they should not be taken seriously.

Carbon is an element.

If a carbon atom combines with oxygen atoms to form CO₂,this would be described as ____.

A well-tested and widely accepted scientific hypothesis or a group of related hypotheses is called a(n)____________________.

Match items with their appropriate chemical description. -The chemical symbol for the element calcium

The compound represented by the formula CH₄ is ____.

Give an example of a positive feedback loop.

Flowing water is an example of ____________________ energy.

Ions are atoms or groups of atoms that have ____.

An acidic solution would have ____.

Two or more different elements can combine to form isotopes.

Match items with their appropriate chemical description. -Two or more atoms held together by chemical bonds

What are the physical states and chemical forms of matter?

Logic and critical thinking are more important tools in science than imagination and creativity.

Within some DNA molecules are certain sequences of nucleotides called

_____________________ occurs when two isotopes of light elements are forced together at extremely high temperatures until they fuse to form a heavier nucleus.

Recall the Bormann-Likens controlled experiment in the forested valleys of New Hampshire.Which statement best describes the effects of water flowing out of deforested areas into undisturbed areas?

Match items with their appropriate chemical description. -Subatomic particle with a negative charge