Question 1

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) A) and B)
G) A) and C)

Question 2

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

Accepted Answer

A hypothesis should be capable...

Question 3

Burning wood in a fireplace is a ________ change.

Accepted Answer

The answer of Burning wood in a fireplace is a...

Question 4

The SI prefixes milli- and mega- represent, respectively:

Accepted Answer

A)   106 and 10-6
B)   10-3 and 106
C)   103 and 10-6 
D)   10-3 and 109
E)   10-6 and 10-3F) A) and C)
G) C) and D)

Question 5

An average Mastiff puppy weighs 2.72 kilograms. How many pounds does an average Mastiff puppy weigh? (1 lb = 453.6 g)

Accepted Answer

A)   1.24 lb
B)   10.0 lb
C)   59.8 lb
D)   6.00 lb
E)   72.0 lbF) A) and E)
G) A) and D)

Question 6

Explain the difference between a hypothesis and a theory.

Accepted Answer

A hypothesis is a tentative ex...

Question 7

Which of these quantities represents the largest mass?

Accepted Answer

A)   2.0 × 102 mg
B)   0.0010 kg
C)   1.0 × 105 μg
D)   2.0 × 102 cg
E)   10.0 dgF) C) and D)
G) A) and B)

Question 8

How many mm3 are in 16.7 cm3?

Accepted Answer

A)   1.67 × 10-5 mm3
B)   1.67 × 10-8 mm3
C)   1.67 × 107 mm3 
D)   1.67 × 104 mm3
E)   1.67 × 10-4 mm3F) A) and B)
G) B) and E)

Question 9

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) None of the above
G) All of the above

Question 10

Which of the following cannot be separated into simpler substances by chemical means?

Accepted Answer

A)   Element
B)   Emulsion
C)   Compound
D)   Homogeneous mixture
E)   Heterogeneous mixtureF) None of the above
G) A) and E)

Question 11

The speed needed to escape the pull of Earth's gravity is 11.3 km/s. What is this speed in mi/h? (1 mile = 1609 m)

Accepted Answer

A)   65,500 mi/h
B)   25,300 mi/h
C)   18,200 mi/h
D)   1,090 mi/h
E)   5.02 × 10-3 mi/hF) All of the above
G) B) and C)

Question 12

Discuss the benefits of using the metric system for measurements.

Accepted Answer

All measurements in the metric system ar...

Question 13

Explain the rule for significant figures for multiplication and division.

Accepted Answer

The number of significant figu...

Question 14

The dark meat of a 20-pound turkey requires an internal temperature of 180°F to be fully cooked. What minimum temperature reading should be displayed on a food thermometer that only measures in degrees Celsius?

Accepted Answer

A)   82°C
B)   354°C
C)   261°C
D)   -192°C
E)   -310°CF) B) and C)
G) A) and C)

Question 15

________ tells how close a measurement is to the true value.

Accepted Answer

The answer of ________ tells how close a measurement is...

Question 16

How many micrograms are in 65.3 kg?

Accepted Answer

A)   0.653 μg
B)   6.53 × 107 μg
C)   6.53 × 104 μg
D)   6.53 × 10-8 μg
E)   6.53 × 1010 μgF) A) and E)
G) C) and E)

Question 17

Explain the difference between an extensive property and an intensive property.

Accepted Answer

An extensive property depends ...

Question 18

The result of (3.8621 × 1.5630)  - 5.98 is properly written as

Accepted Answer

A)   0.06.
B)   0.056.
C)   0.0565.
D)   0.05646.
E)   0.056462.F) A) and E)
G) B) and D)

Question 19

Which choice correctly expresses 15,390,000 rounded to two significant figures?

Accepted Answer

A)   15
B)   1.5 × 10-7
C)   1.5 × 108 
D)   15,400,000
E)   15,000,000F) A) and B)
G) B) and D)

Question 20

Which of the following is not a state of matter?

Accepted Answer

A)   gas
B)   solid
C)   mixture
D)   liquidE) A) and B)
F) None of the above

Exam 1: Chemistry: the Central Science

The SI prefixes milli- and mega- represent, respectively:

Correct Answer
verified

Which of these quantities represents the largest mass?

Correct Answer
verified

Discuss the benefits of using the metric system for measurements.

Correct Answer
verified
All measurements in the metric system ar...
View Answer

Explain the rule for significant figures for multiplication and division.

Correct Answer
verified
The number of significant figu...
View Answer

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

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

Correct Answer
verified

How many micrograms are in 65.3 kg?

Correct Answer
verified

The speed needed to escape the pull of Earth's gravity is 11.3 km/s. What is this speed in mi/h? (1 mile = 1609 m)

Correct Answer
verified

Burning wood in a fireplace is a ________ change.

Correct Answer
verified

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

Correct Answer
verified

________ tells how close a measurement is to the true value.

Correct Answer
verified

Which of the following cannot be separated into simpler substances by chemical means?

Correct Answer
verified

Explain the difference between an extensive property and an intensive property.

Correct Answer
verified
An extensive property depends ...
View Answer

An average Mastiff puppy weighs 2.72 kilograms. How many pounds does an average Mastiff puppy weigh? (1 lb = 453.6 g)

Correct Answer
verified

Explain the difference between a hypothesis and a theory.

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

Which of the following is not a state of matter?

Correct Answer
verified

Which choice correctly expresses 15,390,000 rounded to two significant figures?

Correct Answer
verified

The result of (3.8621 × 1.5630) - 5.98 is properly written as

Correct Answer
verified

The dark meat of a 20-pound turkey requires an internal temperature of 180°F to be fully cooked. What minimum temperature reading should be displayed on a food thermometer that only measures in degrees Celsius?

Correct Answer
verified

How many mm³ are in 16.7 cm³?

Correct Answer
verified

Exam 1: Chemistry: the Central Science

The SI prefixes milli- and mega- represent, respectively:

Correct AnswerverifiedShow Answer

Which of these quantities represents the largest mass?

Correct AnswerverifiedShow Answer

Discuss the benefits of using the metric system for measurements.

Correct AnswerverifiedAll measurements in the metric system ar...View AnswerShow Answer

Explain the rule for significant figures for multiplication and division.

Correct AnswerverifiedThe number of significant figu...View AnswerShow Answer

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

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

Correct AnswerverifiedShow Answer

How many micrograms are in 65.3 kg?

Correct AnswerverifiedShow Answer

The speed needed to escape the pull of Earth's gravity is 11.3 km/s. What is this speed in mi/h? (1 mile = 1609 m)

Correct AnswerverifiedShow Answer

Burning wood in a fireplace is a ________ change.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

________ tells how close a measurement is to the true value.

Correct AnswerverifiedShow Answer

Which of the following cannot be separated into simpler substances by chemical means?

Correct AnswerverifiedShow Answer

Explain the difference between an extensive property and an intensive property.

Correct AnswerverifiedAn extensive property depends ...View AnswerShow Answer

An average Mastiff puppy weighs 2.72 kilograms. How many pounds does an average Mastiff puppy weigh? (1 lb = 453.6 g)

Correct AnswerverifiedShow Answer

Explain the difference between a hypothesis and a theory.

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

Which of the following is not a state of matter?

Correct AnswerverifiedShow Answer

Which choice correctly expresses 15,390,000 rounded to two significant figures?

Correct AnswerverifiedShow Answer

The result of (3.8621 × 1.5630) - 5.98 is properly written as

Correct AnswerverifiedShow Answer

The dark meat of a 20-pound turkey requires an internal temperature of 180°F to be fully cooked. What minimum temperature reading should be displayed on a food thermometer that only measures in degrees Celsius?

Correct AnswerverifiedShow Answer

How many mm3 are in 16.7 cm3?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
All measurements in the metric system ar...
View Answer

Correct Answer
verified
The number of significant figu...
View Answer

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

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
An extensive property depends ...
View Answer

Correct Answer
verified

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

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

How many mm³ are in 16.7 cm³?

Correct Answer
verified