Question 1

A mixture of salt and water that is clear and does not settle is called a suspension.

Accepted Answer

A) True 
 B)False

Question 2

When an atom loses an electron it becomes

Accepted Answer

A)  negatively charged 
B)  a cation 
C)  an anion 
D)  a neutral ion 
E)  a molecule 
A)  negatively charged 
B)  a cation 
C)  an anion 
D)  a neutral ion 
E)  a molecule

Question 3

Which of the following represents a solution?

Accepted Answer

A)  sand and water 
B)  oil and water 
C)  sugar and sand 
D)  sugar and water 
E)  milk 
A)  sand and water 
B)  oil and water 
C)  sugar and sand 
D)  sugar and water 
E)  milk

Question 4

What are the elements and total number of atoms in NaHCO₂?

Accepted Answer

sodium,hydrogen,carbon,oxygen,

Question 5

A chemical bond that does not hold atoms together to form molecules,but attracts molecules together is a(n)_____ bond.

Accepted Answer

A)  ionic 
B)  hydrogen 
C)  intramolecular 
D)  covalent 
E)  polar covalent 
A)  ionic 
B)  hydrogen 
C)  intramolecular 
D)  covalent 
E)  polar covalent

Question 6

Coal dust is more explosive than lumps of coal because pulverizing the coal into dust

Accepted Answer

A)  increases the temperature 
B)  increases the surface area 
C)  adds a catalyst 
D)  increases the concentration of oxygen for the reaction 
E)  changes the chemical composition of the coal 
A)  increases the temperature 
B)  increases the surface area 
C)  adds a catalyst 
D)  increases the concentration of oxygen for the reaction 
E)  changes the chemical composition of the coal

Question 7

Fatty acids are the building blocks of proteins.

Accepted Answer

A) True 
 B)False

Question 8

A certain neutral atom has an atomic number = 19 and a mass number = 39.Which of the following are correct?
1)It has 19 electrons.
2)It has 20 protons.
3)It has 20 neutrons.
4)It has a total of 39 protons and electrons.

Accepted Answer

A)  1 and 4 are correct 
B)  1 and 3 are correct 
C)  2 and 4 are correct 
D)  2 and 3 are correct 
E)  1, 3, and 4 are correct 
A)  1 and 4 are correct 
B)  1 and 3 are correct 
C)  2 and 4 are correct 
D)  2 and 3 are correct 
E)  1, 3, and 4 are correct

Question 9

If an atom has 7 protons,there will be

Accepted Answer

A)  7 electrons in the nucleus 
B)  7 neutrons in the nucleus 
C)  7 neutrons in energy levels outside the nucleus 
D)  2 electrons in the lowest energy level outside the nucleus and 5 electrons in the next higher level 
E)  5 electrons in the lowest energy level outside the nucleus and 2 electrons in the next higher level 
A)  7 electrons in the nucleus 
B)  7 neutrons in the nucleus 
C)  7 neutrons in energy levels outside the nucleus 
D)  2 electrons in the lowest energy level outside the nucleus and 5 electrons in the next higher level 
E)  5 electrons in the lowest energy level outside the nucleus and 2 electrons in the next higher level

Question 10

What is the term that describes the simplest form of matter that cannot be broken down by ordinary chemical means?

Accepted Answer

The answer of What is the term that describes the...

Question 11

The class of organic compounds that is the primary source of nutrient energy for the body is

Accepted Answer

A)  carbohydrates 
B)  proteins 
C)  lipids 
D)  nucleic acids 
E)  adenosine triphosphate 
A)  carbohydrates 
B)  proteins 
C)  lipids 
D)  nucleic acids 
E)  adenosine triphosphate

Question 12

A chemical reaction in the body combines hydrogen and nitrogen to make ammonia.This is an example of a _____ reaction.

Accepted Answer

A)  synthesis 
B)  decomposition 
C)  single replacement 
D)  double replacement 
A)  synthesis 
B)  decomposition 
C)  single replacement 
D)  double replacement

Question 13

A root that means sugar or sweet is

Accepted Answer

A)  carbo- 
B)  sacchar- 
C)  hydro- 
D)  lacto- 
E)  lipo- 
A)  carbo- 
B)  sacchar- 
C)  hydro- 
D)  lacto- 
E)  lipo-

Question 14

Energy for immediate use in the body is stored in the high-energy

Accepted Answer

A)  phosphate bonds of nucleic acids 
B)  phosphate bonds of adenosine triphosphate 
C)  bonds of triglycerides 
D)  bonds of glycogen 
E)  bonds of glucose 
A)  phosphate bonds of nucleic acids 
B)  phosphate bonds of adenosine triphosphate 
C)  bonds of triglycerides 
D)  bonds of glycogen 
E)  bonds of glucose

Question 15

What is the term that describes the type of organic compounds that contain nitrogen in addition to carbon,hydrogen,and oxygen?

Accepted Answer

The answer of What is the term that describes the...

Question 16

The chemical symbol for copper is

Accepted Answer

A)  Co 
B)  Cu 
C)  C 
D)  Ca 
E)  Cp 
A)  Co 
B)  Cu 
C)  C 
D)  Ca 
E)  Cp

Question 17

Cl₂ + 2NaBr → 2NaCl + Br₂ is a chemical equation for a _____ reaction.

Accepted Answer

A)  synthesis 
B)  decomposition 
C)  single replacement 
D)  double replacement 
A)  synthesis 
B)  decomposition 
C)  single replacement 
D)  double replacement

Question 18

The positively charged particle in the nucleus of an atom is

Accepted Answer

A)  a proton 
B)  a neutron 
C)  an electron 
D)  an ion 
E)  made neutral by a neutron 
A)  a proton 
B)  a neutron 
C)  an electron 
D)  an ion 
E)  made neutral by a neutron

Question 19

Which one of the following is NOT true about electrolytes?

Accepted Answer

A)  They dissociate in water to form charged particles. 
B)  They conduct an electrical current. 
C)  They form cations and anions. 
D)  They are the basis of electrocardiograms. 
E)  They are the result of covalent bonds. 
A)  They dissociate in water to form charged particles. 
B)  They conduct an electrical current. 
C)  They form cations and anions. 
D)  They are the basis of electrocardiograms. 
E)  They are the result of covalent bonds.

Question 20

A substance that reacts with acids or bases to minimize the change in pH is

Accepted Answer

A)  an acid 
B)  a base 
C)  a salt 
D)  water 
E)  a buffer 
A)  an acid 
B)  a base 
C)  a salt 
D)  water 
E)  a buffer

A mixture of salt and water that is clear and does not settle is called a suspension.

When an atom loses an electron it becomes

Which of the following represents a solution?

What are the elements and total number of atoms in NaHCO₂?

A chemical bond that does not hold atoms together to form molecules,but attracts molecules together is a(n)_____ bond.

Coal dust is more explosive than lumps of coal because pulverizing the coal into dust

Fatty acids are the building blocks of proteins.

A certain neutral atom has an atomic number = 19 and a mass number = 39.Which of the following are correct? 1)It has 19 electrons. 2)It has 20 protons. 3)It has 20 neutrons. 4)It has a total of 39 protons and electrons.

If an atom has 7 protons,there will be

What is the term that describes the simplest form of matter that cannot be broken down by ordinary chemical means?

The class of organic compounds that is the primary source of nutrient energy for the body is

A chemical reaction in the body combines hydrogen and nitrogen to make ammonia.This is an example of a _____ reaction.

A root that means sugar or sweet is

Energy for immediate use in the body is stored in the high-energy

What is the term that describes the type of organic compounds that contain nitrogen in addition to carbon,hydrogen,and oxygen?

The chemical symbol for copper is

Cl₂ + 2NaBr → 2NaCl + Br₂ is a chemical equation for a _____ reaction.

The positively charged particle in the nucleus of an atom is

Which one of the following is NOT true about electrolytes?

A substance that reacts with acids or bases to minimize the change in pH is

Introduction to the Human Body

Cell Structure and Function

Tissues and Membranes

Integumentary System

Skeletal System

Muscular System

Nervous System

Sensory System

Endocrine System

Cardiovascular System: The Heart

Cardiovascular System: Blood Vessels

Cardiovascular System: Blood

Lymphatic System and Body Defense

Respiratory System

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Exam 2: Chemistry, Matter, and Life

A mixture of salt and water that is clear and does not settle is called a suspension.

When an atom loses an electron it becomes

Which of the following represents a solution?

What are the elements and total number of atoms in NaHCO₂?

A chemical bond that does not hold atoms together to form molecules,but attracts molecules together is a(n)_____ bond.

Coal dust is more explosive than lumps of coal because pulverizing the coal into dust

Fatty acids are the building blocks of proteins.

A certain neutral atom has an atomic number = 19 and a mass number = 39.Which of the following are correct? 1)It has 19 electrons. 2)It has 20 protons. 3)It has 20 neutrons. 4)It has a total of 39 protons and electrons.

If an atom has 7 protons,there will be

What is the term that describes the simplest form of matter that cannot be broken down by ordinary chemical means?

The class of organic compounds that is the primary source of nutrient energy for the body is

A chemical reaction in the body combines hydrogen and nitrogen to make ammonia.This is an example of a _____ reaction.

A root that means sugar or sweet is

Energy for immediate use in the body is stored in the high-energy

What is the term that describes the type of organic compounds that contain nitrogen in addition to carbon,hydrogen,and oxygen?

The chemical symbol for copper is

Cl₂ + 2NaBr → 2NaCl + Br₂ is a chemical equation for a _____ reaction.

The positively charged particle in the nucleus of an atom is

Which one of the following is NOT true about electrolytes?

A substance that reacts with acids or bases to minimize the change in pH is

Introduction to the Human Body

Cell Structure and Function

Tissues and Membranes

Integumentary System

Skeletal System

Muscular System

Nervous System

Sensory System

Endocrine System

Cardiovascular System: The Heart

Cardiovascular System: Blood Vessels

Cardiovascular System: Blood

Lymphatic System and Body Defense

Respiratory System

Digestive System

Metabolism and Nutrition

Urinary System and Body Fluids

Reproductive System

Development

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