quiz 2 (metrics) review topics and review problems · quiz 2 (metrics) review topics and review...

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QUIZ 2 (METRICS) REVIEW TOPICS AND REVIEW PROBLEMS

GENERAL INFORMATION

You will have 15 minutes for this quiz.

As the quiz is pure memorization, this amount of time for each question should be limited only by how fast you can write.

There will be no “History of Chemistry” questions.

There will be no “Scientific Method” questions.

There are no calculations on this quiz. Therefore, no calculators are needed.

You will feel rushed on this quiz. Thus, you must know the material thoroughly in order to do well.

Do not “memorize and dump” this information: you will be using it for the rest of the year!

A note to the grammar purists: sometimes my quotation marks at the ends of my sentences do not include

the periods and questions marks. This is a stylistic choice that I make in order to present the material with

greater clarity.

PART 1: THE SEVEN METRIC BASE UNITS

There will be five questions for Part 1 of this quiz. Practice Problems for Part 1 are on Page 2 of this review packet.

PART 2: METRIC PREFIXES

There will be ten questions for Part 2 of this quiz. Practice problems for Part 2 are on Pages 4 – 5 of this

review packet.

There is a table of metric prefixes on Page 3 aid you in your memorization.

I am sending you “flash cards” to also aid you in your memorization. You are not required to use them.

There will be five questions for Part 3 of this quiz. The Practice problems for Part 3 are on Page 5 of this

Review Packet.

PART 3: UNIT EQUATIONS AND UNIT FACTORS

This part of the quiz also requires memorization of the material.

Be able to define the term “unit equation.” See p. 32 in the textbook.

Four questions

One definition question: unit equation.

Three questions: writing unit equations

Be able to supply the unit equation between two parameters.

Practice problems for Part 4 are on p. 6.

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PART 4: MEMORIZED UNIT EQUATIONS

Write the unit equations between the parameters given on the “memorized unit equations list.” See your

notes or Page 6 of this Review Packet.

Total of three questions.

Practice problems for Part 4 are on p. 6.

PART 5: UNIT EQUATIONS AND UNIT FACTORS

This part of the quiz also requires memorization of the material.

Be able to define the term “unit factor.” See p. 33 in the textbook.

The practice questions are on p. 6 of this review packet.

Two questions

One definition question: “unit factor”

One question: write the two unit factors when given the unit equation.

Recap of Quiz Breakdown

Part 1: Five questions

Part 2: Five questions

Part 3: Four questions

Part 4: Three questions

Part 5: Two questions

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PART 1 INFORMATION AND PRACTICE PROBLEMS: THE SEVEN METRIC BASE UNITS

The metric base units are listed on page 31 of the textbook and in your notes.

You will need to know the seven base units, their symbols, and parameters for which they are used to

measure.

Each answer for Part 1 is worth 1 point.

Types of questions:

YOU ARE GIVEN THE NAME OF THE METRIC BASE UNIT:

Supply the symbol of the metric base unit.

Ex: What is the symbol for the candela?

Supply the parameter that the metric base unit is used to measure.

Ex: What parameter is measured by the ampere?

YOU ARE GIVEN THE SYMBOL OF THE METRIC BASE UNIT:

Supply the name of the metric base unit.

Ex: What is the name of the metric base unit represented by the metric symbol K?

Supply the parameter that the symbol represents.

Ex: What parameter is measured in moles?

YOU ARE GIVEN THE PARAMETER IN WHICH THE METRIC BASE UNIT IS MEASURED:

Supply the name of the metric base unit.

Ex: What is the name of the metric base unit

that is used to measure mass?

Supply the symbol of the metric unit.

Ex: What is the symbol for the metric base unit

that is used to measure time?

Note: I have not supplied an answer key for the practice problems listed above.

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PART 2: METRIC PREFIXES

Memorize all metric prefixes, symbols, and exponents in bold blue. You are not responsible for metric prefixes in gray.

memory trick symbol prefix exponent quantity prefix

The T tera- 1012

1,000,000,000,000 one trillion

Great G giga- 109 1,000,000,000 one billion

Mighty M mega- 106 1,000,000 one million

king k kilo- 103 1000 one thousand

henry h hecto- 102 100 one hundred

didn’t abolish da deca- 101 10 ten

dragons d deci- 10−1

0.1 or 1

10 one-tenth

cuz c centi- 10−2

0.01 or 1

100 one-hundredth

magic m milli- 10−3

0.001 or 1

1000 one-thousandth

Mike µ micro- 10−6

0.000001 or 1

1,000,000 one-millionth

needed n nano- 10−9

0.000000001 or 1

1,000,000,000 one-trillionth

poison p pico- 10−12

0.000000000001 or 1

1,000,000,000,000 one-quadrillionth

fangs f femto- 10−15

0.000000000000001 or 1

1,000,000,000,000,000 one-quintillionth

Be able to write unit equations when given units including metric prefixes.

Be able to write both unit factors for each unit equation.

And, yes, we will be using numbers as small as nanometers.

Be careful: Americans use the “short scale” system for large numbers, as opposed to the “long scale.”

Example: 1,000,000,000,000 is “one trillion” to Americans (short scale); it is “one billion” to those cultures that use the “long scale.”

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Part 2 Practice Problems: “Metric Prefixes, Symbols, Exponents, Quantities, and Numbers”

As this is memorized material, you should be able to answer these questions as fast as you can write. Less than 30 seconds per question.

Fill in the blanks based upon the given information in each question.

Each blank is worth 1 point.

PRACTICE TABLE 1

Prefix Symbol Exponent Quantity Number

Practice Question 1) centi-

Practice Question 2) M

Practice Question 3) 10−6

Note: each blank is worth 1 point each

PRACTICE TABLE 2

Metric Prefix

(name) Metric Prefix

(symbol) Metric

Exponent Quantity Number

Practice Question 4) one-billionth

Practice Question 5) kilo-

Practice Question 6)


0.01 or 1

100

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PRACTICE TABLE 3

Metric Prefix


(symbol) Metric


Practice Question 7) m

Practice Question 8) one billion

Practice Question 9) 0.000001 or 1

1,000,000


Practice Questions 10 – 15 are worth 1 point each.

Practice Question 10) Write the metric prefix that corresponds to “one-hundredth”.

Practice Question 11) Write the number (word form) represented by the metric prefix symbol “G”.

Practice Question 12) Write the exponential term represented by the metric prefix “nano-”.

Practice Question 13) Write the metric symbol that corresponds to the exponential term: 103 .

Practice Question 14) Write the quantity represented by the metric prefix “giga-”.

Practice Question 15) Write the exponential term represented by the metric prefix “M”.

Practice Question 16) Why is kg instead of g used as the metric base unit? (2 points)

Practice Question 17) A group of students record “10.0 sec” in their lab notebooks for a chemical reaction. State the error, and

state how the error should be fixed. (2 points)

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PART 3 INFORMATION AND PRACTICE PROBLEMS: “UNIT EQUATIONS”

Instructions: write the unit equation when given two parameters.

All answers must contain metric symbols: example “L” instead of “liters.”

All numbers must be written in exponent form…with the following exception:

I will accept any of the unit equations from the “memorized unit equations list,” if applicable.

Practice Question 18) Write the unit equation between hertz and gigahertz. (4 points). The metric symbol for

for “hertz” is “Hz”

Practice Question 19) Write the unit equation between nanometers and meters. (5 points)

Practice Question 20) Write the unit equation between micrograms and grams. (5 points)

Practice Question 21) Write the unit equation between kilometers and meters. (5 points)

Practice Question 22) Write the unit equation between seconds and milliseconds. (5 points)

Practice Question 23) Define the term “unit equation." Provide an example. (5 points)

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PART 4 INFORMATION AND PRACTICE PROBLEMS: “MEMORIZED UNIT EQUATIONS”

Instructions: write the memorized unit equations for the following questions.

All questions must be answered with correct metric symbols. Example: “L” instead of “liters”

Each question is worth 3 points.

Memorized Unit Equations List

1 m = 1000 mm 1 kg = 1000 g

1 g = 1000 mg 1 km = 1000 m

1 L = 1000 mL 1 m = 100 cm

Practice Question 24) Write the memorized unit equation between seconds and milliseconds. (5 points)

Practice Question 25) Write the memorized unit equation between grams and kilograms. (5 points)

Practice Question 26) Write the memorized unit equation between centimeters and meters. (5 points)

Practice Question 27) Write the memorized unit equation between meters and kilometers. (5 points)

Practice Question 28) Write the memorized unit equation between milligrams and grams. (5 points)

Practice Question 29) Write the memorized unit equation between liters and milliliters. (5 points)

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PART 5 INFORMATION AND PRACTICE PROBLEMS: “UNIT FACTORS”

You will be given the unit equation.

Write the two unit factors that can be obtained from the two unit equations.

Each question is worth 10 points.

Note: the only reason I am giving you one of these questions is because if “you can’t do it once, you can’t

do it one hundred times.”

Practice Question 30) 1 gigameters = 1 × 109 meter. (10 points)

Practice Question 31) 1 megawatt = 1 × 106 watts. (8 points). The abbreviation for “watt” is “W”.

Practice Question 32) 1 nanosecond = 1 × 10−9 seconds. (10 points)

Practice Question 33) 1 kilojoules = 1 × 10−9 joules. (8 points). The metric symbol for joules is “J”.

Practice Question 34) Define the term “unit factor.” Give an example in your explanation. (5 points)

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ANSWER KEY AND GRADING SCHEME

The grading scheme is to give you an idea of how I grade.

Some of you may think I am “nickeling and diming” you to death. (Glass half-empty)

I am really giving you credit for what you know. (Glass half-full)

PART 1 ANSWER KEY

Each question is worth 1 point

I count these as “definition” questions, which are your responsibility. Therefore, you will have to go to the textbook for your

answer.

PART 2 ANSWER KEY

Each question is worth 1 point

I count these as “definition” questions, which are your responsibility. Therefore, you will have to go to the textbook for your

answer.

PRACTICE TABLE 1

Prefix Symbol Exponent Quantity* Number

Practice Question 1) centi- c 10−2 0.01 or 1

100 one-hundredth

Practice Question 2) mega- M 106 1,000,000 one million

Practice Question 3) micro- µ 10−6 0.000001 or 1



For “Quantities”, you do not need to list both the decimal and the fraction form. I will accept either. Note: if you list both, and either of them incorrect, you will get no credit for the question.

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PRACTICE TABLE 2

Metric Prefix


(symbol) Metric


Practice Question 4) nano- n 10−9 0.000000001 or 1

1,000,000,000 one-billionth

Practice Question 5) kilo- k 103 1000 one thousand

Practice Question 6) centi- c 10−2 one-hundredth


For “Quantities”, you do not need to list both the decimal and the fraction form. I will accept either. Note: if you list both, and either of them

incorrect, you will get no credit for the question.

PRACTICE TABLE 3

Metric Prefix


(symbol) Metric


Practice Question 7) milli- m 10−3 0.001 or 1

1000 one-thousandth

Practice Question 8) tera- T 109 1,000,000,000 one billion

Practice Question 9) micro- µ 10−6 0.000001 or 1



For “Quantities”, you do not need to list both the decimal and the fraction form. I will accept either. Note: if you list both, and either of them

incorrect, you will get no credit for the question.

0.01 or 1

100

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Practice Questions 10 – 15 are worth 1 point each.

Practice Question 10) Write the metric prefix that corresponds to “one-hundredth”. centi-

Practice Question 11) Write the number (word form) represented by the metric prefix symbol “G”. one billion

Practice Question 12) Write the exponential term represented by the metric prefix “nano-”. 10−9

Practice Question 13) Write the metric symbol that corresponds to the exponential term: 103 . k

Practice Question 14) Write the quantity represented by the metric prefix “giga-”. 1,000,000,000

Practice Question 15) Write the exponential term represented by the metric prefix “M”. 106

Practice Question 16) Why is kg instead of g used as the metric base unit? (2 points)

Note: This is a “definition” question. You will need to consult your notes or the

textbook.

Practice Question 17) A group of students record “10.0 sec” in their lab notebooks for a chemical reaction. State the error, and

state how the error should be fixed. (2 points)

Note: This is a “definition” question. You will need to consult your notes or the

textbook.

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Practice Question 18) Write the unit equation between hertz and gigahertz. (4 points). The metric symbol for

for “hertz” is “Hz”

1 x 109 Hz = 1 GHz

1 pt 0 pts 1 pt 1 pt 1 pt exponent given equals sign for “1” symbol

* Even though I won’t show this for every solution, I would also give full credit for:

1 GHz = 1 x 109 Hz

1 pt 1 pt 1 pt 1 pt 0 pts for “1” symbol equals sign exponent given

Practice Question 19) Write the unit equation between nanometers and meters. (5 points)

1 nm = 1 × 10−9 m

1 pt 1 pt 1 pt 1 pt 1 pt

for “1” symbol equals sign exponent symbol

Practice Question 20) Write the unit equation between micrograms and grams. (5 points)

1 µg = 1 × 10−6 g

1 pt 1 pt 1 pt 1 pt 1 pt for “1” symbol equals sign for “1” symbol

Practice Question 21) Write the unit equation between kilometers and meters. (5 points)

1 km = 1 × 103 m

1 pt 1 pt 1 pt 1 pt 1 pt for “1” symbol equals sign for “1” symbol

Practice Question 22) Write the unit equation between seconds and milliseconds. (5 points)

1 s = 1 × 10−3 ms


for “1” symbo equals sign exponent symbol

Practice Question 23) Define the term “unit equation.” Provide an example. (5 points)

This is a textbook “definition” question. Definitions are your responsibility.

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Practice Question 24) Write the memorized unit equation between seconds and milliseconds. (5 points)

1 s = 1000 ms


for “1” symbol equals sign for quantity symbol

Practice Question 25) Write the memorized unit equation between grams and kilograms. (5 points)

1000 g = 1 kg


for quantity symbol equals sign for “1” symbol

Practice Question 26) Write the memorized unit equation between centimeters and meters. (5 points)

100 cm = 1 m



Practice Question 27) Write the memorized unit equation between meters and kilometers. (5 points)

1000 m = 1 km



Practice Question 28) Write the memorized unit equation between milligrams and grams. (5 points)

1000 mg = 1 g



Practice Question 29) Write the memorized unit equation between liters and milliliters. (5 points)

1 L = 1000 mL


for “1” symbol equals sign for quantity symbol

quiz 2 (metrics) review topics and review problems · quiz 2 (metrics) review topics and review...

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