Question 1

You prepare 1000.mL of tea and transfer it to a 1.00 quart pitcher for storage.Which of the following statements is true? (1 L = 1.0567 qt)

Accepted Answer

A)  The pitcher will be filled to 100% of its capacity with no tea spilled.
B)  The pitcher will be filled to about 95% of its capacity.
C)  The pitcher will be filled to about 50% of its capacity.
D)  The pitcher will be completely filled and a small amount of tea will overflow.
E)  The pitcher will be completely filled and most of the tea will overflow.F) A) and E)
G) A) and B)

Question 2

Which one of these represents a chemical change?

Accepted Answer

A)  Boiling water to form steam
B)  Turning hair yellow with bleach
C)  Melting butter
D)  Mixing powdered charcoal and oxygen at room temperature
E)  Cutting a bar of sodium metal into pieces with a knifeF) A) and D)
G) All of the above

Question 3

Express 122.0°F in °C.

Accepted Answer

A)  50.0°C
B)  64.4°C
C)  67.8°C
D)  162.0°C
E)  219.6°CF) D) and E)
G) None of the above

Question 4

Explain the difference between a heterogeneous mixture and a homogeneous mixture.

Accepted Answer

A homogeneous mixture has a un...

Question 5

Which of the following activities is not a part of good science?

Accepted Answer

A)  Proposing a theory
B)  Developing a hypothesis
C)  Making quantitative observations
D)  Designing experiments
E)  Indulging in speculationF) C) and D)
G) A) and E)

Question 6

The boiling point for liquid helium is 4.0 K.What is the temperature in degrees Fahrenheit?

Accepted Answer

A)  -452.5°F
B)  -498.9°F
C)  -237.2°F
D)  131.8°F
E)  530.9°FF) B) and D)
G) A) and B)

Question 7

Which of the following is an example of an observation?

Accepted Answer

A)  Gases expand as their temperature increases because the gas molecules are moving more rapidly.
B)  Paraffin wax begins to melt at 57°C.
C)  Three samples of wax are heated to 75°C.
D)  The force acting on an object is equal to its mass times its acceleration.
E)  Will all waxes melt at the same temperature?F) A) and B)
G) B) and E)

Question 8

A(n)__________ is something that has a definite composition.

Accepted Answer

The answer of A(n)__________ is something that has a definite...

Question 9

Explain the difference between a hypothesis and a theory.

Accepted Answer

A hypothesis is a tentative ex...

Question 10

The number 1.050 × 109 has how many significant figures?

Accepted Answer

A)  2
B)  3
C)  4
D)  9
E)  13F) A) and D)
G) A) and C)

Question 11

Select the answer that expresses the result of this calculation with the correct number of significant figures. 13.602 x 1.90 x 3.06
--------------------------------
4) 2 x 1.4097

Accepted Answer

A)  13.3568
B)  13.357
C)  13.36
D)  13.4
E)  13F) B) and C)
G) None of the above

Question 12

Talc is a mineral with low conductivity for heat and electricity which is not attacked by acid.It is used in talcum powder and face powder.Suppose a sample of talc weighs 13.65 g with a density of 1.75 g/cm3 in mineral oil.If this same sample of talc in air weighs 35.97 g,assuming no volume change,what is the density of the talc sample in air?

Accepted Answer

A)  4.61 g/cm3
B)  2.82 g/cm3
C)  2.63 g/cm3
D)  2.44 g/cm3
E)  1.61 g/cm3F) C) and E)
G) C) and D)

Question 13

Briefly explain the relationship between hypothesis and experiment in the scientific method.

Accepted Answer

A hypothesis should be capable...

Question 14

The average distance between the Earth and the Moon is 240,000 miles.Express this distance in kilometers.(1 mi = 1609 m)

Accepted Answer

A)  6.1 × 105 km
B)  5.3 × 105 km
C)  3.9 × 105 km
D)  1.5 × 105 km
E)  9.4 × 104 kmF) B) and C)
G) B) and D)

Question 15

Radio waves travel at the speed of light,which is 3.00 × 108 m/s.How many kilometers will radio messages to outer space travel in exactly one year? (365.24 days = 1 y)

Accepted Answer

A)  9.46 × 1015 km
B)  7.30 × 108 km
C)  7.10 × 1010 km
D)  9.47 × 1012 km
E)  3.33 × 10- 3 kmF) A) and D)
G) A) and E)

Question 16

Iron has a density of 7.87 g/cm3.What mass of iron would be required to cover a football playing surface of 120 yds × 60.yds to a depth of 1.0 mm? (1 inch = 2.54 cm)

Accepted Answer

A)  76 kg
B)  47 Mg
C)  7.6 × 105 g
D)  4.7 × 108 g
E)  1.9 × 107 gF) None of the above
G) A) and D)

Question 17

The density of a substance is an intensive property.

Accepted Answer

A) True 
 B)False

Question 18

What is a combination of two or more substances in which the substances retain their distinct identities?

Accepted Answer

The answer of What is a combination of two or...

Question 19

What is the term used for findings that are summarized based on a pattern or trend?

Accepted Answer

A)  Law
B)  Hypothesis
C)  Theory
D)  Phenomena
E)  PredictionF) B) and D)
G) A) and E)

Question 20

The volume of a substance is an intensive property.

Accepted Answer

A) True 
 B)False

Exam 1: Chemistry: the Central Science

Select the answer that expresses the result of this calculation with the correct number of significant figures. 13.602 x 1.90 x 3.06 -------------------------------- 4) 2 x 1.4097

Correct Answer
verified

The density of a substance is an intensive property.

Correct Answer
verified

Explain the difference between a heterogeneous mixture and a homogeneous mixture.

Correct Answer
verified
A homogeneous mixture has a un...
View Answer

What is the term used for findings that are summarized based on a pattern or trend?

Correct Answer
verified

Correct Answer
verified

A(n)__________ is something that has a definite composition.

Correct Answer
verified

The number 1.050 × 10⁹ has how many significant figures?

Correct Answer
verified

Which of the following is an example of an observation?

Correct Answer
verified

You prepare 1000.mL of tea and transfer it to a 1.00 quart pitcher for storage.Which of the following statements is true? (1 L = 1.0567 qt)

Correct Answer
verified

The boiling point for liquid helium is 4.0 K.What is the temperature in degrees Fahrenheit?

Correct Answer
verified

What is a combination of two or more substances in which the substances retain their distinct identities?

Correct Answer
verified

The volume of a substance is an intensive property.

Correct Answer
verified

Radio waves travel at the speed of light,which is 3.00 × 10⁸ m/s.How many kilometers will radio messages to outer space travel in exactly one year? (365.24 days = 1 y)

Correct Answer
verified

The average distance between the Earth and the Moon is 240,000 miles.Express this distance in kilometers.(1 mi = 1609 m)

Correct Answer
verified

Briefly explain the relationship between hypothesis and experiment in the scientific method.

Correct Answer
verified
A hypothesis should be capable...
View Answer

Explain the difference between a hypothesis and a theory.

Correct Answer
verified
A hypothesis is a tentative ex...
View Answer

Which one of these represents a chemical change?

Correct Answer
verified

Iron has a density of 7.87 g/cm³.What mass of iron would be required to cover a football playing surface of 120 yds × 60.yds to a depth of 1.0 mm? (1 inch = 2.54 cm)

Correct Answer
verified

Which of the following activities is not a part of good science?

Correct Answer
verified

Express 122.0°F in °C.

Correct Answer
verified

Exam 1: Chemistry: the Central Science

Select the answer that expresses the result of this calculation with the correct number of significant figures. 13.602 x 1.90 x 3.06 -------------------------------- 4) 2 x 1.4097

Correct AnswerverifiedShow Answer

The density of a substance is an intensive property.

Correct AnswerverifiedShow Answer

Explain the difference between a heterogeneous mixture and a homogeneous mixture.

Correct AnswerverifiedA homogeneous mixture has a un...View AnswerShow Answer

What is the term used for findings that are summarized based on a pattern or trend?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

A(n)__________ is something that has a definite composition.

Correct AnswerverifiedShow Answer

The number 1.050 × 109 has how many significant figures?

Correct AnswerverifiedShow Answer

Which of the following is an example of an observation?

Correct AnswerverifiedShow Answer

You prepare 1000.mL of tea and transfer it to a 1.00 quart pitcher for storage.Which of the following statements is true? (1 L = 1.0567 qt)

Correct AnswerverifiedShow Answer

The boiling point for liquid helium is 4.0 K.What is the temperature in degrees Fahrenheit?

Correct AnswerverifiedShow Answer

What is a combination of two or more substances in which the substances retain their distinct identities?

Correct AnswerverifiedShow Answer

The volume of a substance is an intensive property.

Correct AnswerverifiedShow Answer

Radio waves travel at the speed of light,which is 3.00 × 108 m/s.How many kilometers will radio messages to outer space travel in exactly one year? (365.24 days = 1 y)

Correct AnswerverifiedShow Answer

The average distance between the Earth and the Moon is 240,000 miles.Express this distance in kilometers.(1 mi = 1609 m)

Correct AnswerverifiedShow Answer

Briefly explain the relationship between hypothesis and experiment in the scientific method.

Correct AnswerverifiedA hypothesis should be capable...View AnswerShow Answer

Explain the difference between a hypothesis and a theory.

Correct AnswerverifiedA hypothesis is a tentative ex...View AnswerShow Answer

Which one of these represents a chemical change?

Correct AnswerverifiedShow Answer

Iron has a density of 7.87 g/cm3.What mass of iron would be required to cover a football playing surface of 120 yds × 60.yds to a depth of 1.0 mm? (1 inch = 2.54 cm)

Correct AnswerverifiedShow Answer

Which of the following activities is not a part of good science?

Correct AnswerverifiedShow Answer

Express 122.0°F in °C.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
A homogeneous mixture has a un...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The number 1.050 × 10⁹ has how many significant figures?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Radio waves travel at the speed of light,which is 3.00 × 10⁸ m/s.How many kilometers will radio messages to outer space travel in exactly one year? (365.24 days = 1 y)

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
A hypothesis should be capable...
View Answer

Correct Answer
verified
A hypothesis is a tentative ex...
View Answer

Correct Answer
verified

Iron has a density of 7.87 g/cm³.What mass of iron would be required to cover a football playing surface of 120 yds × 60.yds to a depth of 1.0 mm? (1 inch = 2.54 cm)

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified