Question 1

Which of the following indicates "reactant"? C6H12O6 + O2 $\rightarrow$CO2 + 6H2O

Accepted Answer

A)  C6H12O6 + O2 
B)  H2O 
C)  CO2 
D)  None of the choices is correct. 
A)  C6H12O6 + O2 
B)  H2O 
C)  CO2 
D)  None of the choices is correct.

Question 2

Solutions are always comprised of

Accepted Answer

A)  solvents and solute. 
B)  liquids and solids. 
C)  water and salts. 
D)  compounds and ions. 
A)  solvents and solute. 
B)  liquids and solids. 
C)  water and salts. 
D)  compounds and ions.

Question 3

The correct symbol for a hydroxide ion is

Accepted Answer

A)  H-. 
B)  H+. 
C)  (OH)-. 
D)  (OH)+. 
A)  H-. 
B)  H+. 
C)  (OH)-. 
D)  (OH)+.

Question 4

Which of the following would have the largest number of hydrogen ions (H+)?

Accepted Answer

A)  A solution with the pH 11 
B)  A solution with the pH 8 
C)  A container of acetic acid (vinegar) 
D)  A container of a strong base 
A)  A solution with the pH 11 
B)  A solution with the pH 8 
C)  A container of acetic acid (vinegar) 
D)  A container of a strong base

Question 5

Which kind of attractive force holds two molecules together?

Accepted Answer

A)  ionic bond 
B)  hydrogen bond 
C)  covalent bond 
D)  sticky bond 
A)  ionic bond 
B)  hydrogen bond 
C)  covalent bond 
D)  sticky bond

Question 6

In the expression C6H12O6$\rightarrow$2C2H5OH + 2CO2, the products are

Accepted Answer

A)  C6H12O6. 
B)  C6H12O6 + zymase. 
C)  zymase + 2C2H5OH + 2CO2. 
D)  2C2H5OH + 2CO2. 
A)  C6H12O6. 
B)  C6H12O6 + zymase. 
C)  zymase + 2C2H5OH + 2CO2. 
D)  2C2H5OH + 2CO2.

Question 7

Which of the following is a chemical reaction that is also known as digestion?

Accepted Answer

A)  phosphorylation 
B)  dehydration synthesis 
C)  acid-base 
D)  hydrolysis 
A)  phosphorylation 
B)  dehydration synthesis 
C)  acid-base 
D)  hydrolysis

Question 8

List and define two types of chemical bonds.
COVALENT--attractive force between two atoms that share electrons
IONIC--attractive force between ions of opposite charge
HYDROGEN--attractive force between polar molecules

Accepted Answer

There are various types of chemical bond

Question 9

An atom that has gained electrons is a

Accepted Answer

A)  reactant. 
B)  negative ion. 
C)  positive ion. 
D)  compound ion. 
A)  reactant. 
B)  negative ion. 
C)  positive ion. 
D)  compound ion.

Question 10

When you sprinkle table salt on your food, the salt

Accepted Answer

A)  ionizes. 
B)  dissociates. 
C)  forms covalent bonds with the food. 
D)  undergoes an acid-base reaction. 
A)  ionizes. 
B)  dissociates. 
C)  forms covalent bonds with the food. 
D)  undergoes an acid-base reaction.

Question 11

A hydroxide ion has an oxygen atom

Accepted Answer

A)  only. 
B)  and an extra electron. 
C)  and a hydrogen atom, and an extra electron. 
D)  and a hydrogen atom, and an extra proton. 
A)  only. 
B)  and an extra electron. 
C)  and a hydrogen atom, and an extra electron. 
D)  and a hydrogen atom, and an extra proton.

Question 12

What is happening here? Water + NaCl $\rightarrow$ Na+ + Cl-

Accepted Answer

A)  A solution of ions is prepared. 
B)  The dissociation of ions. 
C)  Movement of an electron from the outermost energy level of Na to the outermost energy level of Cl. 
D)  All the choices are true. 
A)  A solution of ions is prepared. 
B)  The dissociation of ions. 
C)  Movement of an electron from the outermost energy level of Na to the outermost energy level of Cl. 
D)  All the choices are true.

Question 13

When two atoms share a pair of electrons, this type of chemical bond is

Accepted Answer

A)  ionic. 
B)  covalent. 
C)  hydrogen. 
D)  negative-positive. 
A)  ionic. 
B)  covalent. 
C)  hydrogen. 
D)  negative-positive.

Question 14

Which one of the following statements is false concerning matter?

Accepted Answer

A)  Matter is anything that has mass and takes up space. 
B)  Air is matter. 
C)  All matter has the same density. 
D)  The phases of matter are determined by the relative amounts of energy in the matter's molecules. 
A)  Matter is anything that has mass and takes up space. 
B)  Air is matter. 
C)  All matter has the same density. 
D)  The phases of matter are determined by the relative amounts of energy in the matter's molecules.

Question 15

Which of the following is an acid?

Accepted Answer

A)  NaOH 
B)  HOH 
C)  H2SO4 
D)  NaCl 
A)  NaOH 
B)  HOH 
C)  H2SO4 
D)  NaCl

Question 16

Given that an unknown atom's mass number (AMU) is 27, its combination of particles could be

Accepted Answer

A)  27 electrons, 16 neutrons, 16 protons. 
B)  27 neutrons, 27 protons, 27 electrons. 
C)  15 neutrons, 12 electrons, 15 protons. 
D)  16 electrons, 11 neutrons, 16 protons. 
A)  27 electrons, 16 neutrons, 16 protons. 
B)  27 neutrons, 27 protons, 27 electrons. 
C)  15 neutrons, 12 electrons, 15 protons. 
D)  16 electrons, 11 neutrons, 16 protons.

Question 17

A material composed of atoms vibrating in place

Accepted Answer

A)  has high kinetic energy and is a gas. 
B)  has low kinetic energy and is a liquid. 
C)  has low kinetic energy and is a solid. 
D)  has high kinetic energy and is a solid. 
A)  has high kinetic energy and is a gas. 
B)  has low kinetic energy and is a liquid. 
C)  has low kinetic energy and is a solid. 
D)  has high kinetic energy and is a solid.

Exam 2: The Basics of Life: Chemistry

Which of the following indicates "reactant"? C6H12O6 + O2 →\rightarrow→ CO2 + 6H2O

Solutions are always comprised of

The correct symbol for a hydroxide ion is

Which of the following would have the largest number of hydrogen ions (H+)?

Which kind of attractive force holds two molecules together?

In the expression C6H12O6 →\rightarrow→ 2C2H5OH + 2CO2, the products are

Which of the following is a chemical reaction that is also known as digestion?

List and define two types of chemical bonds. COVALENT--attractive force between two atoms that share electrons IONIC--attractive force between ions of opposite charge HYDROGEN--attractive force between polar molecules

An atom that has gained electrons is a

When you sprinkle table salt on your food, the salt

A hydroxide ion has an oxygen atom

What is happening here? Water + NaCl →\rightarrow→ Na+ + Cl-

When two atoms share a pair of electrons, this type of chemical bond is

Which one of the following statements is false concerning matter?

Which of the following is an acid?

Given that an unknown atom's mass number (AMU) is 27, its combination of particles could be

A material composed of atoms vibrating in place

What Is Biology

Organic Molecules: The Molecules of Life

Cell Structure and Function

Enzymes, Coenzymes, and Energy

Biochemical Pathways: Cellular Respiration

Biochemical Pathways: Photosynthesis

DNA and RNA: The Molecular Basis of Heredity

Cell Division: Proliferation and Reproduction

Patterns of Inheritance

Applications of Biotechnology

Diversity Within Species and Population Genetics

Evolution and Natural Selection

The Formation of Species and Evolutionary Change

Ecosystem Dynamics: The Flow of Energy and Matter

Community Interactions

Population Ecology

Evolutionary and Ecological Aspects of Behavior

The Origin of Life and the Evolution of Cells

The Classification and Evolution of Organisms

The Nature of Microorganisms

The Plant Kingdom

The Animal Kingdom

Materials Exchange in the Body

Nutrition: Food and Diet

The Bodys Control Mechanisms and Immunity

Human Reproduction, Sex, and Sexuality

Filters

Which of the following indicates "reactant"? C₆H₁₂O₆ + O₂ $\rightarrow$ CO₂ + 6H₂O

Which of the following would have the largest number of hydrogen ions (H⁺)?

In the expression C₆H₁₂O₆ $\rightarrow$ 2C₂H₅OH + 2CO₂, the products are

What is happening here? Water + NaCl $\rightarrow$ Na⁺ + Cl^-