QUIZ 2 (METRICS) REVIEW TOPICS AND REVIEW PROBLEMS

Transcription

1 QUIZ 2 (METRICS) REVIEW TOPICS AND REVIEW PROBLEMS GENERAL INFORMATION You will have 5 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 : THE SEVEN METRIC BASE UNITS There will be five questions for Part of this quiz. Practice Problems for Part 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. Page of 5

2 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 : Five questions Part 2: Five questions Part 3: Four questions Part 4: Three questions Part 5: Two questions Page 2 of 5

3 PART INFORMATION AND PRACTICE PROBLEMS: THE SEVEN METRIC BASE UNITS The metric base units are listed on page 3 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 is worth 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. Page 3 of 5

4 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- 0 2,000,000,000,000 one trillion Great G giga- 0 9,000,000,000 one billion Mighty M mega- 0 6,000,000 one million king k kilo one thousand henry h hecto one hundred didn t abolish da deca- 0 0 ten dragons d deci or cuz c centi or magic m milli or Mike µ micro or needed n nano or poison p pico or fangs f femto or 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 one-tenth one-hundredth one-thousandth,000,000 one-millionth,000,000,000 one-trillionth,000,000,000,000 one-quadrillionth,000,000,000,000,000 one-quintillionth Example:,000,000,000,000 is one trillion to Americans (short scale); it is one billion to those cultures that use the long scale. Page 4 of 5

5 Part 2 Practice Problems: es, 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 point. PRACTICE TABLE Prefix Symbol Exponent Quantity Number Practice Question ) centi- Practice Question 2) M Practice Question 3) 0 6 Note: each blank is worth point each PRACTICE TABLE 2 (name) (symbol) Metric Exponent Quantity Number Practice Question 4) one-billionth Practice Question 5) kilo- Practice Question 6) Note: each blank is worth point each 0.0 or 00 Page 5 of 5

6 PRACTICE TABLE 3 (name) (symbol) Metric Exponent Quantity Number Practice Question 7) m Practice Question 8) one billion Practice Question 9) Note: each blank is worth point each or,000,000 Practice Questions 0 5 are worth point each. Practice Question 0) Practice Question ) Practice Question 2) Write the metric prefix that corresponds to one-hundredth. Write the number (word form) represented by the metric prefix symbol G. Write the exponential term represented by the metric prefix nano-. Practice Question 3) Write the metric symbol that corresponds to the exponential term: 0 3. Practice Question 4) Practice Question 5) Write the quantity represented by the metric prefix giga-. Write the exponential term represented by the metric prefix M. Practice Question 6) Practice Question 7) Why is kg instead of g used as the metric base unit? (2 points) A group of students record 0.0 sec in their lab notebooks for a chemical reaction. State the error, and state how the error should be fixed. (2 points) Page 6 of 5

7 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 8) Write the unit equation between hertz and gigahertz. (4 points). The metric symbol for for hertz is Hz Practice Question 9) 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 2) 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) Page 7 of 5

8 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 m = 000 mm kg = 000 g g = 000 mg km = 000 m L = 000 ml m = 00 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) Page 8 of 5

9 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 0 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) gigameters = 0 9 meter. (0 points) Practice Question 3) megawatt = 0 6 watts. (8 points). The abbreviation for watt is W. Practice Question 32) nanosecond = 0 9 seconds. (0 points) Practice Question 33) kilojoules = 0 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) Page 9 of 5

10 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 ANSWER KEY Each question is worth 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 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 Prefix Symbol Exponent Quantity* Number Practice Question ) centi- c or 00 one-hundredth Practice Question 2) mega- M 0 6,000,000 one million Practice Question 3) micro- µ or Note: each blank is worth point each,000,000 one-millionth 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. Page 0 of 5

11 PRACTICE TABLE 2 (name) (symbol) Metric Exponent Quantity Number Practice Question 4) nano- n or,000,000,000 one-billionth Practice Question 5) kilo- k one thousand Practice Question 6) centi- c or one-hundredth Note: each blank is worth point each 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. 00 PRACTICE TABLE 3 (name) (symbol) Metric Exponent Quantity Number Practice Question 7) milli- m or 000 one-thousandth Practice Question 8) tera- T 0 9,000,000,000 one billion Practice Question 9) micro- µ or,000,000 one-millionth Note: each blank is worth point each 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. Page of 5

12 Practice Questions 0 5 are worth point each. Practice Question 0) Write the metric prefix that corresponds to one-hundredth. centi- Practice Question ) Write the number (word form) represented by the metric prefix symbol G. one billion Practice Question 2) Write the exponential term represented by the metric prefix nano Practice Question 3) Write the metric symbol that corresponds to the exponential term: 0 3. k Practice Question 4) Write the quantity represented by the metric prefix giga-.,000,000,000 Practice Question 5) Write the exponential term represented by the metric prefix M. 0 6 Practice Question 6) 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 7) A group of students record 0.0 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. Page 2 of 5

13 Practice Question 8) Write the unit equation between hertz and gigahertz. (4 points). The metric symbol for for hertz is Hz x 0 9 Hz = GHz pt 0 pts pt pt pt exponent given equals sign for symbol * Even though I won t show this for every solution, I would also give full credit for: GHz = x 0 9 Hz pt pt pt pt 0 pts for symbol equals sign exponent given Practice Question 9) Write the unit equation between nanometers and meters. (5 points) nm = 0 9 m pt pt pt pt pt for symbol equals sign exponent symbol Practice Question 20) Write the unit equation between micrograms and grams. (5 points) µg = 0 6 g pt pt pt pt pt for symbol equals sign for symbol Practice Question 2) Write the unit equation between kilometers and meters. (5 points) km = 0 3 m pt pt pt pt pt for symbol equals sign for symbol Practice Question 22) Write the unit equation between seconds and milliseconds. (5 points) s = 0 3 ms pt pt pt pt pt for 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. Page 3 of 5

14 Practice Question 24) Write the memorized unit equation between seconds and milliseconds. (5 points) s = 000 ms pt pt pt pt pt for symbol equals sign for quantity symbol Practice Question 25) Write the memorized unit equation between grams and kilograms. (5 points) 000 g = kg pt pt pt pt pt for quantity symbol equals sign for symbol Practice Question 26) Write the memorized unit equation between centimeters and meters. (5 points) 00 cm = m pt pt pt pt pt for quantity symbol equals sign for symbol Practice Question 27) Write the memorized unit equation between meters and kilometers. (5 points) 000 m = km pt pt pt pt pt for quantity symbol equals sign for symbol Practice Question 28) Write the memorized unit equation between milligrams and grams. (5 points) 000 mg = g pt pt pt pt pt for quantity symbol equals sign for symbol Practice Question 29) Write the memorized unit equation between liters and milliliters. (5 points) L = 000 ml pt pt pt pt pt for symbol equals sign for quantity symbol Page 4 of 5

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