Question 1

What element has the symbol Cu?

Accepted Answer

A)  cobalt 
B)  carbon 
C)  copper 
D)  chromium 
A)  cobalt 
B)  carbon 
C)  copper 
D)  chromium

Question 2

A person weighs 165 lbs.What is the weight in kilograms if 2.2 lbs = 1 kg?

Accepted Answer

A)  165 * 2.2 
B)  165 ÷ 2.2 
C)  2.2 ÷ 165 
D)  165 + 2.2 
A)  165 * 2.2 
B)  165 ÷ 2.2 
C)  2.2 ÷ 165 
D)  165 + 2.2

Question 3

Which is a compound?

Accepted Answer

A)  mercury 
B)  blood 
C)  sugar 
D)  air 
A)  mercury 
B)  blood 
C)  sugar 
D)  air

Question 4

An example of a homogeneous mixture is

Accepted Answer

A)  oil in water 
B)  a salt water solution 
C)  a suspension 
D)  a pure substance 
A)  oil in water 
B)  a salt water solution 
C)  a suspension 
D)  a pure substance

Question 5

Which statement describes a physical property of oxygen?

Accepted Answer

A)  oxygen supports burning of gasoline 
B)  oxygen has a density of l.4 g/mL 
C)  oxygen is required for human metabolism of food 
D)  oxygen combines with iron causing the formation of rust 
A)  oxygen supports burning of gasoline 
B)  oxygen has a density of l.4 g/mL 
C)  oxygen is required for human metabolism of food 
D)  oxygen combines with iron causing the formation of rust

Question 6

The simplest form of matter is a(n)

Accepted Answer

A)  element 
B)  mixture 
C)  compound 
D)  solution 
A)  element 
B)  mixture 
C)  compound 
D)  solution

Question 7

Which of the following sets, is a list of the symbols for: lead, a compound of equal parts hydrogen and oxygen, and elemental oxygen?

Accepted Answer

A)  PB, H2O2, O 
B)  Pb, HO, O 
C)  Pb, H2O2, O2 
D)  PB, HO, O2 
A)  PB, H2O2, O 
B)  Pb, HO, O 
C)  Pb, H2O2, O2 
D)  PB, HO, O2

Question 8

For which of the following is it necessary that there be a definite composition which cannot vary?

Accepted Answer

A)  mixture 
B)  solution 
C)  compound 
D)  colloid 
A)  mixture 
B)  solution 
C)  compound 
D)  colloid

Question 9

How many phosphorus atoms are in the formula H3PO4?

Accepted Answer

A)  4 
B)  3 
C)  7 
D)  1 
A)  4 
B)  3 
C)  7 
D)  1

Question 10

Which of the following is an example of a chemical change?

Accepted Answer

A)  boiling water 
B)  iodine sublimating 
C)  barbecuing a steak 
D)  breaking a piece of glass 
A)  boiling water 
B)  iodine sublimating 
C)  barbecuing a steak 
D)  breaking a piece of glass

Question 11

Potential energy is defined as

Accepted Answer

A)  heat energy 
B)  energy associated with motion 
C)  stored energy 
D)  the ability to do work 
A)  heat energy 
B)  energy associated with motion 
C)  stored energy 
D)  the ability to do work

Question 12

Which of the following is an SI unit?

Accepted Answer

A)  pound 
B)  kilogram 
C)  millimeter 
D)  calorie 
A)  pound 
B)  kilogram 
C)  millimeter 
D)  calorie

Question 13

Which is a physical property?

Accepted Answer

A)  freezing point 
B)  color 
C)  odor 
D)  all of the above 
A)  freezing point 
B)  color 
C)  odor 
D)  all of the above

Question 14

How many millimeters are in 100 cm?

Accepted Answer

A)  10 
B)  1000 
C)  100 
D)  1 
A)  10 
B)  1000 
C)  100 
D)  1

Question 15

Which of the following is one of the classes of pure substances?

Accepted Answer

A)  compound 
B)  homogeneous mixture 
C)  solution 
D)  heterogeneous mixture 
A)  compound 
B)  homogeneous mixture 
C)  solution 
D)  heterogeneous mixture

Question 16

The symbol for magnesium is

Accepted Answer

A)  Ma 
B)  Mg 
C)  Mm 
D)  Mn 
A)  Ma 
B)  Mg 
C)  Mm 
D)  Mn

Question 17

The element whose name is derived from the Latin aurum, meaning shining dawn

Accepted Answer

A)  gold 
B)  aluminum 
C)  silver 
D)  chromium 
A)  gold 
B)  aluminum 
C)  silver 
D)  chromium

Question 18

How many categories of pure substances exist?

Accepted Answer

A)  2 
B)  3 
C)  thousands 
D)  about 100 
A)  2 
B)  3 
C)  thousands 
D)  about 100

Question 19

Which of the following is a physical change?

Accepted Answer

A)  souring of milk 
B)  ripening of fruit 
C)  frying an egg 
D)  melting 
A)  souring of milk 
B)  ripening of fruit 
C)  frying an egg 
D)  melting

Question 20

A pure substance which can be decomposed into two or more pure substances is a(n)

Accepted Answer

A)  element 
B)  compound 
C)  mixture 
D)  colloid 
A)  element 
B)  compound 
C)  mixture 
D)  colloid

What element has the symbol Cu?

A person weighs 165 lbs.What is the weight in kilograms if 2.2 lbs = 1 kg?

Which is a compound?

An example of a homogeneous mixture is

Which statement describes a physical property of oxygen?

The simplest form of matter is a(n)

Which of the following sets, is a list of the symbols for: lead, a compound of equal parts hydrogen and oxygen, and elemental oxygen?

For which of the following is it necessary that there be a definite composition which cannot vary?

How many phosphorus atoms are in the formula H₃PO₄?

Which of the following is an example of a chemical change?

Potential energy is defined as

Which of the following is an SI unit?

Which is a physical property?

How many millimeters are in 100 cm?

Which of the following is one of the classes of pure substances?

The symbol for magnesium is

The element whose name is derived from the Latin aurum, meaning shining dawn

How many categories of pure substances exist?

Which of the following is a physical change?

A pure substance which can be decomposed into two or more pure substances is a(n)

Living in a World of Chemistry

Atoms and the Periodic Table

The Air We Breathe

Chemical Bonding and States of Matter

Carbon Dioxide and the Greenhouse Effect

Chlorofluorocarbons and the Ozone Layer

Chemical Reactivity: Chemicals in Action

Acid-Base Reactions

Oxidation-Reduction Reactions

Water, Water Everywhere but Not a Drop to Drink

Energy and Hydrocarbons

Nuclear Changes and Nuclear Power

Organic Chemicals and Polymers

The Chemistry of Life

Nutrition: the Basis of Healthy Living

Chemistry and Medicine

The Chemistry of Useful Materials

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Exam 2: The Chemical View of Matter

What element has the symbol Cu?

A person weighs 165 lbs.What is the weight in kilograms if 2.2 lbs = 1 kg?

Which is a compound?

An example of a homogeneous mixture is

Which statement describes a physical property of oxygen?

The simplest form of matter is a(n)

Which of the following sets, is a list of the symbols for: lead, a compound of equal parts hydrogen and oxygen, and elemental oxygen?

For which of the following is it necessary that there be a definite composition which cannot vary?

How many phosphorus atoms are in the formula H3PO4?

Which of the following is an example of a chemical change?

Potential energy is defined as

Which of the following is an SI unit?

Which is a physical property?

How many millimeters are in 100 cm?

Which of the following is one of the classes of pure substances?

The symbol for magnesium is

The element whose name is derived from the Latin aurum, meaning shining dawn

How many categories of pure substances exist?

Which of the following is a physical change?

A pure substance which can be decomposed into two or more pure substances is a(n)

Living in a World of Chemistry

Atoms and the Periodic Table

The Air We Breathe

Chemical Bonding and States of Matter

Carbon Dioxide and the Greenhouse Effect

Chlorofluorocarbons and the Ozone Layer

Chemical Reactivity: Chemicals in Action

Acid-Base Reactions

Oxidation-Reduction Reactions

Water, Water Everywhere but Not a Drop to Drink

Energy and Hydrocarbons

Nuclear Changes and Nuclear Power

Organic Chemicals and Polymers

The Chemistry of Life

Nutrition: the Basis of Healthy Living

Chemistry and Medicine

The Chemistry of Useful Materials

Filters

How many phosphorus atoms are in the formula H₃PO₄?