Question 1

Which of the following can be classified as matter?

Accepted Answer

A) water 
B) sand 
C) perfume 
D) ice cream 
E) all of the above 
A) water 
B) sand 
C) perfume 
D) ice cream 
E) all of the above

Question 2

Water and ethanol can be separated by heating the ethanol until it boils away from the water. What type of change is this?

Accepted Answer

A) a physical change 
B) a chemical change 
C) a molecular change 
D) a decomposition 
E) none of the above 
A) a physical change 
B) a chemical change 
C) a molecular change 
D) a decomposition 
E) none of the above

Question 3

Which of the following would not be considered a chemical property?

Accepted Answer

A) the temperature at which a liquid will boil 
B) light sensitivity 
C) whether a metal will rust or not 
D) whether a material will dissolve in acid or not 
E) the tendency of a material to explode 
A) the temperature at which a liquid will boil 
B) light sensitivity 
C) whether a metal will rust or not 
D) whether a material will dissolve in acid or not 
E) the tendency of a material to explode

Question 4

If you eat metallic sodium or inhale chlorine gas, you stand a strong chance of dying. Let these two elements react with each other, however, and you can safely sprinkle the compound on your popcorn for better taste. What is going on?

Accepted Answer

A) After these two elements react they lose the potential energy to cause harm. 
B) All elements are inherently dangerous 
C) Sodium and chlorine from the elemental form is more concentrated than the sodium and chlorine we get from sodium chloride. 
D) Sodium chloride has nothing in common with sodium and chlorine. 
A) After these two elements react they lose the potential energy to cause harm. 
B) All elements are inherently dangerous 
C) Sodium and chlorine from the elemental form is more concentrated than the sodium and chlorine we get from sodium chloride. 
D) Sodium chloride has nothing in common with sodium and chlorine.

Question 5

What is the name of the following compound? CO2

Accepted Answer

A) carbon dioxide 
B) dicobalt 
C) dioxocarbon 
D) calcium oxide 
E) calcium dioxide 
A) carbon dioxide 
B) dicobalt 
C) dioxocarbon 
D) calcium oxide 
E) calcium dioxide

Question 6

Which of the following would not be considered a physical property?

Accepted Answer

A) temperature at which a material catches on fire 
B) color 
C) conductivity 
D) hardness 
E) temperature at which a material melts 
A) temperature at which a material catches on fire 
B) color 
C) conductivity 
D) hardness 
E) temperature at which a material melts

Question 7

In the winter Vermonters make a tasty treat called "sugar on snow" in which they pour boiled-down maple syrup onto a scoop of clean fresh snow. As the syrup hits the snow it forms a delicious taffy. Which of the following changes are involved in the making of sugar on snow?

Accepted Answer

A) Boiling down the maple syrup involves the evaporation of water. 
B) The syrup warms the snow causing it to melt while the syrup becomes more viscous. 
C) As the maple syrup is boiled the sugar within the syrup begins to caramelize, which is an example of a chemical change. 
D) All of the above changes are involved in the making of sugar on snow. 
A) Boiling down the maple syrup involves the evaporation of water. 
B) The syrup warms the snow causing it to melt while the syrup becomes more viscous. 
C) As the maple syrup is boiled the sugar within the syrup begins to caramelize, which is an example of a chemical change. 
D) All of the above changes are involved in the making of sugar on snow.

Question 8

Which of the following would not be considered matter?

Accepted Answer

A) light 
B) trees 
C) air 
D) clouds 
E) rain 
A) light 
B) trees 
C) air 
D) clouds 
E) rain

Question 9

The element silicon has a melting point of 1,410°C and a boiling point of 2,355°C. It is a weak conductor of electricity, its density is 2.3 grams per cubic centimeter and it easily forms silicon dioxide when exposed to air. Which of the following is a chemical property of silicon?

Accepted Answer

A) its ability to conduct electricity 
B) its density 
C) its melting point 
D) its ability to react with oxygen 
E) C and D 
A) its ability to conduct electricity 
B) its density 
C) its melting point 
D) its ability to react with oxygen 
E) C and D

Which of the following can be classified as matter?

Water and ethanol can be separated by heating the ethanol until it boils away from the water. What type of change is this?

Which of the following would not be considered a chemical property?

If you eat metallic sodium or inhale chlorine gas, you stand a strong chance of dying. Let these two elements react with each other, however, and you can safely sprinkle the compound on your popcorn for better taste. What is going on?

What is the name of the following compound? CO₂

Which of the following would not be considered a physical property?

In the winter Vermonters make a tasty treat called "sugar on snow" in which they pour boiled-down maple syrup onto a scoop of clean fresh snow. As the syrup hits the snow it forms a delicious taffy. Which of the following changes are involved in the making of sugar on snow?

Which of the following would not be considered matter?

The element silicon has a melting point of 1,410°C and a boiling point of 2,355°C. It is a weak conductor of electricity, its density is 2.3 grams per cubic centimeter and it easily forms silicon dioxide when exposed to air. Which of the following is a chemical property of silicon?

Patterns of Motion and Equilibrium

Newtons Laws of Motion

Momentum and Energy

Gravity, Projectiles, and Satellites

Fluid Mechanics

Thermal Energy and Thermodynamics

Heat Transfer and Change of Phase

Static and Current Electricity

Magnetism and Electromagnetic Induction

Waves and Sound

Light

Atoms and the Periodic Table

The Atomic Nucleus and Radioactivity

How Atoms Bond and Molecules Attract

Mixtures

How Chemicals React

Two Classes of Chemical Reactions

Organic Compounds

Rocks and Minerals

Plate Tectonics and Earths Interior

Shaping Earths Surface

Geologic Timereading the Rock Record

The Oceans, Atmosphere, and Climatic Effects

Driving Forces of Weather

The Solar System

Stars and Galaxies

The Structure of Space and Time

Prologue: the Nature of Science

Filters

Exam 14: Elements of Chemistry

Which of the following can be classified as matter?

Water and ethanol can be separated by heating the ethanol until it boils away from the water. What type of change is this?

Which of the following would not be considered a chemical property?

If you eat metallic sodium or inhale chlorine gas, you stand a strong chance of dying. Let these two elements react with each other, however, and you can safely sprinkle the compound on your popcorn for better taste. What is going on?

What is the name of the following compound? CO2

Which of the following would not be considered a physical property?

In the winter Vermonters make a tasty treat called "sugar on snow" in which they pour boiled-down maple syrup onto a scoop of clean fresh snow. As the syrup hits the snow it forms a delicious taffy. Which of the following changes are involved in the making of sugar on snow?

Which of the following would not be considered matter?

The element silicon has a melting point of 1,410°C and a boiling point of 2,355°C. It is a weak conductor of electricity, its density is 2.3 grams per cubic centimeter and it easily forms silicon dioxide when exposed to air. Which of the following is a chemical property of silicon?

Patterns of Motion and Equilibrium

Newtons Laws of Motion

Momentum and Energy

Gravity, Projectiles, and Satellites

Fluid Mechanics

Thermal Energy and Thermodynamics

Heat Transfer and Change of Phase

Static and Current Electricity

Magnetism and Electromagnetic Induction

Waves and Sound

Light

Atoms and the Periodic Table

The Atomic Nucleus and Radioactivity

How Atoms Bond and Molecules Attract

Mixtures

How Chemicals React

Two Classes of Chemical Reactions

Organic Compounds

Rocks and Minerals

Plate Tectonics and Earths Interior

Shaping Earths Surface

Geologic Timereading the Rock Record

The Oceans, Atmosphere, and Climatic Effects

Driving Forces of Weather

The Solar System

Stars and Galaxies

The Structure of Space and Time

Prologue: the Nature of Science

Filters

What is the name of the following compound? CO₂