Question 1

Scientific hypotheses differ from scientific theories in that they are ____.

Accepted Answer

A)  widely accepted descriptions of what we find happening over and over in nature 
B)  possible, but not yet well-tested, explanations of data 
C)  not able to be tested 
D)  arrived at after extensive mathematical modeling 
E)  facts rather than opinions 
A)  widely accepted descriptions of what we find happening over and over in nature 
B)  possible, but not yet well-tested, explanations of data 
C)  not able to be tested 
D)  arrived at after extensive mathematical modeling 
E)  facts rather than opinions

Question 2

What happens when you place a cold pot on a hot stovetop?

Accepted Answer

A)  Energy flows from the air to the stovetop. 
B)  There is no net movement of energy. 
C)  Energy flows evenly back and forth between the pot and the stovetop. 
D)  Energy flows from the base of the pot to the stovetop. 
E)  Energy flows from the stovetop to the base of the pot. 
A)  Energy flows from the air to the stovetop. 
B)  There is no net movement of energy. 
C)  Energy flows evenly back and forth between the pot and the stovetop. 
D)  Energy flows from the base of the pot to the stovetop. 
E)  Energy flows from the stovetop to the base of the pot.

Question 3

Kinetic energy and potential energy differ in that____.

Accepted Answer

A)  heat is a type of potential energy, not kinetic energy 
B)  kinetic energy is energy of motion and potential energy is stored energy 
C)  potential energy is energy of motion and kinetic energy is commercial energy 
D)  only potential energy involves movement 
E)  only kinetic energy involves energy storage 
A)  heat is a type of potential energy, not kinetic energy 
B)  kinetic energy is energy of motion and potential energy is stored energy 
C)  potential energy is energy of motion and kinetic energy is commercial energy 
D)  only potential energy involves movement 
E)  only kinetic energy involves energy storage

Question 4

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 5

A scientific hypothesis must be testable.

Accepted Answer

A) True 
 B)False

Question 6

A chemical that is a combination of two or more different elements in fixed proportions is called a(n) ____________________.

Accepted Answer

The answer of A chemical that is a combination of...

Question 7

____ are the fundamental structural and functional units of life.

Accepted Answer

A)  Ions 
B)  Atoms 
C)  Compounds 
D)  Molecules 
E)  Cells 
A)  Ions 
B)  Atoms 
C)  Compounds 
D)  Molecules 
E)  Cells

Question 8

The law of conservation of matter states that whenever matter undergoes a physical or chemical change, ____.

Accepted Answer

A)  atoms can be created 
B)  atoms can be destroyed 
C)  atoms cannot be created or destroyed 
D)  atoms can be destroyed if we compost them 
E)  atoms can be created by reactions between organic compounds 
A)  atoms can be created 
B)  atoms can be destroyed 
C)  atoms cannot be created or destroyed 
D)  atoms can be destroyed if we compost them 
E)  atoms can be created by reactions between organic compounds

Question 9

Matter is best described as ____.

Accepted Answer

A)  thermodynamic 
B)  something that has the capacity to do work 
C)  positively charged 
D)  something that can produce change 
E)  anything that has mass and takes up space 
A)  thermodynamic 
B)  something that has the capacity to do work 
C)  positively charged 
D)  something that can produce change 
E)  anything that has mass and takes up space

Question 10

All organic compounds are primarily characterized by the presence of ____.

Accepted Answer

A)  carbon 
B)  hydrogen 
C)  oxygen 
D)  nitrogen 
E)  phosphorus 
A)  carbon 
B)  hydrogen 
C)  oxygen 
D)  nitrogen 
E)  phosphorus

Question 11

You are studying atoms in the lab and realize that you have two atoms with the same atomic number but different numbers of neutrons. These atoms must be ____.

Accepted Answer

A)  molecules 
B)  compounds 
C)  ions 
D)  isotopes 
E)  organic 
A)  molecules 
B)  compounds 
C)  ions 
D)  isotopes 
E)  organic

Question 12

What is one reason that statistics and mathematical models are so important in science?

Accepted Answer

A)  Scientific data is often biased. 
B)  Scientific data is often incorrect due to poor experimental design and limitations on data collection, so mathematics can be used to smooth over these inaccuracies. 
C)  The process of peer review is flawed and insufficient. 
D)  These help to deal with complex interactions of variables and there is no way to measure every instance of a phenomenon. 
E)  It allows scientists to prove their results conclusively. 
A)  Scientific data is often biased. 
B)  Scientific data is often incorrect due to poor experimental design and limitations on data collection, so mathematics can be used to smooth over these inaccuracies. 
C)  The process of peer review is flawed and insufficient. 
D)  These help to deal with complex interactions of variables and there is no way to measure every instance of a phenomenon. 
E)  It allows scientists to prove their results conclusively.

Question 13

The Bormann-Likens scientific investigation of clear-cutting forest watersheds is an example of reliable science. What does that tell you about the work?

Accepted Answer

It has been subjected to peer review, an

Question 14

Pure water has a pH of 7, exactly neutral.

Accepted Answer

A) True 
 B)False

Question 15

Ions are formed when an atom or group of atoms gains or losses ____________________.

Accepted Answer

The answer of Ions are formed when an atom or...

Question 16

The nucleus of a human cell contains ____.

Accepted Answer

A)  genes only 
B)  DNA molecules only 
C)  chromosomes only 
D)  genes on chromosomes, which are made up of DNA molecules 
E)  chromosomes on genes 
A)  genes only 
B)  DNA molecules only 
C)  chromosomes only 
D)  genes on chromosomes, which are made up of DNA molecules 
E)  chromosomes on genes

Question 17

Which of the following is true of matter?

Accepted Answer

A)  It can exist as three physical states. 
B)  It can exist as two physical states. 
C)  It can exist as three chemical forms. 
D)  It can exist as four chemical forms. 
E)  It can exist as a physical state or as a chemical form. 
A)  It can exist as three physical states. 
B)  It can exist as two physical states. 
C)  It can exist as three chemical forms. 
D)  It can exist as four chemical forms. 
E)  It can exist as a physical state or as a chemical form.

Question 18

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)  gained or lost both protons and electrons 
E)  different numbers of both protons and neutrons from other atoms of that type 
A)  gained or lost electrons 
B)  gained or lost protons 
C)  gained or lost neutrons 
D)  gained or lost both protons and electrons 
E)  different numbers of both protons and neutrons from other atoms of that type

Question 19

An element ____.

Accepted Answer

A)  can combine with protons to make an atom 
B)  is made up of compounds 
C)  can combine with one or more other elements to make a compound 
D)  is defined by the number of electrons it has 
E)  can only be organic 
A)  can combine with protons to make an atom 
B)  is made up of compounds 
C)  can combine with one or more other elements to make a compound 
D)  is defined by the number of electrons it has 
E)  can only be organic

Question 20

Energy can be formally defined as the ____.

Accepted Answer

A)  velocity of any moving object 
B)  heat generated by atoms losing electrons 
C)  capacity to do work 
D)  displacement of heat from the sun to the earth 
E)  process of moving objects 
A)  velocity of any moving object 
B)  heat generated by atoms losing electrons 
C)  capacity to do work 
D)  displacement of heat from the sun to the earth 
E)  process of moving objects

Scientific hypotheses differ from scientific theories in that they are ____.

What happens when you place a cold pot on a hot stovetop?

Kinetic energy and potential energy differ in that____.

An acidic solution would have ____.

A scientific hypothesis must be testable.

A chemical that is a combination of two or more different elements in fixed proportions is called a(n) ____________________.

____ are the fundamental structural and functional units of life.

The law of conservation of matter states that whenever matter undergoes a physical or chemical change, ____.

Matter is best described as ____.

All organic compounds are primarily characterized by the presence of ____.

You are studying atoms in the lab and realize that you have two atoms with the same atomic number but different numbers of neutrons. These atoms must be ____.

What is one reason that statistics and mathematical models are so important in science?

The Bormann-Likens scientific investigation of clear-cutting forest watersheds is an example of reliable science. What does that tell you about the work?

Pure water has a pH of 7, exactly neutral.

Ions are formed when an atom or group of atoms gains or losses ____________________.

The nucleus of a human cell contains ____.

Which of the following is true of matter?

Ions are atoms or groups of atoms that have ____.

An element ____.

Energy can be formally defined as the ____.

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Ecosystems: What Are They and How Do They Work

Biodiversity and Evolution

Species Interactions, Ecological Succession and Population Control

The Human Population and Urbanization

Climate and Biodiversity

Sustaining Biodiversity: Saving Species

Sustaining Biodiversity: Saving Ecosystems

Food Production and the Environment

Water Resources and Water Pollution

Geology and Nonrenewable Mineral Resources

Energy Resources

Environmental Hazards and Human Health

Air Pollution, Climate Change and Ozone Depletion

Solid and Hazardous Waste

Environmental Economics, Politics and Worldviews

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Exam 2: Science, Matter, Energy and Systems

Scientific hypotheses differ from scientific theories in that they are ____.

What happens when you place a cold pot on a hot stovetop?

Kinetic energy and potential energy differ in that____.

An acidic solution would have ____.

A scientific hypothesis must be testable.

A chemical that is a combination of two or more different elements in fixed proportions is called a(n) ____________________.

____ are the fundamental structural and functional units of life.

The law of conservation of matter states that whenever matter undergoes a physical or chemical change, ____.

Matter is best described as ____.

All organic compounds are primarily characterized by the presence of ____.

You are studying atoms in the lab and realize that you have two atoms with the same atomic number but different numbers of neutrons. These atoms must be ____.

What is one reason that statistics and mathematical models are so important in science?

The Bormann-Likens scientific investigation of clear-cutting forest watersheds is an example of reliable science. What does that tell you about the work?

Pure water has a pH of 7, exactly neutral.

Ions are formed when an atom or group of atoms gains or losses ____________________.

The nucleus of a human cell contains ____.

Which of the following is true of matter?

Ions are atoms or groups of atoms that have ____.

An element ____.

Energy can be formally defined as the ____.

The Environment and Sustainability

Ecosystems: What Are They and How Do They Work

Biodiversity and Evolution

Species Interactions, Ecological Succession and Population Control

The Human Population and Urbanization

Climate and Biodiversity

Sustaining Biodiversity: Saving Species

Sustaining Biodiversity: Saving Ecosystems

Food Production and the Environment

Water Resources and Water Pollution

Geology and Nonrenewable Mineral Resources

Energy Resources

Environmental Hazards and Human Health

Air Pollution, Climate Change and Ozone Depletion

Solid and Hazardous Waste

Environmental Economics, Politics and Worldviews

Filters