Entrance Ticket 9/9/14Grades are posted! We are now on entrance

ticket set 2

In the white text books read about scientific notation (pp. 15 and 16).

Put the following into scientific notation….

1. 1300 m

2. 1,366 g

3. 0.0004 J

4. 602200000000000000000000 atoms

Measurement Booklet page 1Use the red text books pp. 64 & 65 to help with

the front cover (page 1)

On the cover of your booklets (p.1) please sketch the 3 dart boards from page 64. Below the dart boards please define the following terms:

-Accuracy

-Precision

-Error

-Percent Error

Entrance Ticket 9/10/14

Write the following in scientific notation:

1) 23,000,000 3) 0.000005

2) 0.00203 4) 657,000,000,000

Copy this: In scientific measurement, a result can not be more precise than the least precise measurement. Therefore, we use significant figures.

Homework tonight: practice parts III & IV

Answers Write in scientific notation:

1) 23,000,000 3) 0.000005

2) 0.00203 4) 657,000,000,000

Answers:

1) 2.3 x 107 3) 5 x 10-6

2) 2.03 x 10-3 4) 6.57 x 1011

Answers Part I 1.) 7.3 x 103 9.) 6.23 x 10-5

2.) 6 x 106 10.) 3.5 x 10-4

3.) 2.61 x 102 4.) 4.23 x 101

5.) 2.1 x 104

6.) 1.6 x 10-1

7.) 6.0 x 10-2

8.) 2.3 x 10-2

Answers Part II 1.) 2,600 9.) 0.0000765

2.) 5,100,000 10.) 54,080 3.) 0.04234.) 0.00610

5.) 0.926

6.) 7.6

7.) 0.00380

8.) 2,110,000

Booklet page 2: Significant FiguresBooklet page 2: Significant Figures

Define Define significant figuressignificant figures on on page 2.page 2.

On the bottom half of page 2 On the bottom half of page 2 write down the significant write down the significant figure rules for 0 and give figure rules for 0 and give one example for each rule.one example for each rule.

Rules for ZeroRules for Zero0 is significant when “sandwiched”0 is significant when “sandwiched”606 1003.2 1.000006606 1003.2 1.000006

0 is sig. when at the end of a # with a 0 is sig. when at the end of a # with a decimaldecimal

3.160 54.10 0.0005003.160 54.10 0.000500

0 is not when @ the end of a # w/o a decimal0 is not when @ the end of a # w/o a decimal56,000 250 825,30056,000 250 825,300

0 is not when in front of a # with a decimal0 is not when in front of a # with a decimal 0.00065 0.08 0.0000000000030.00065 0.08 0.000000000003

Entrance Ticket 9/11/14

How many Significant Figures are in the following:

1) 0.062 g 5) 1020 m

2) 0.0620 g 6) 1020. m

3) 120 kg 7) 1020.00 m

4) 1,002 kg 8) 0.00000930 s

9) What would be the result of multiplying the measurements 163.25 mm by 10.2 mm?

Answers 1) 2 5) 3

2) 3 6) 4

3) 2 7) 6

4) 4 8) 3

9) What would be the result of multiplying the measurements 163.25 mm by 10.2 mm?

163.25 mm x 10.2 mm = 1,665.15 mm2

Correct answer: 1,670 mm2

measurement activitymeasurement activity Get into two groups per lab table. On Get into two groups per lab table. On

today’s e.t. show your measurements and today’s e.t. show your measurements and show your calculations.show your calculations.

Find the Find the perimeterperimeter and and areaarea of your card. of your card. Pretend the card is a rectangle. Use Pretend the card is a rectangle. Use centimeters! Find the lengths to the centimeters! Find the lengths to the nearest 100nearest 100thsths place (0.00)! You are going place (0.00)! You are going to have to look close and estimate with to have to look close and estimate with your eyes. Make sure to record your your eyes. Make sure to record your answers to answers to proper precisionproper precision!!

Answers to Part III

1.) 3 6.) 3

2.) 2 7.) 2

3.) 2 8.) 3

4.) 4 9.) 6

5.) 1 10.) 1

Answers to Part IV

1.) 5.0 g

2.) 6.9 g

3.) 10.1 g

4.) 232.7 g

5.) 9 g

6.) 278 m

7.) 2,610 g or 2.61x103 g

Answers to Part IV

8.) 0.569 mL or 5.69 x 10-1 mL

9.) 36,000 or 3.6 x 104 mm

10.) 34 cm2

11.) 2.0 g/mL

12.) 30. cm3

13.) 0.3 g/cm3

Answers to Part IV

14.) 1 x 106 m2 or 1,000,000 m2

15.) 5.5 x 102 cm2 or 550 cm2

16.) 1.3 mm2

17.) 2.0 x 105 g/mL

18.) 2.0 g/cm3

19.) 1.7 x 107 m3

Answers to Metric Conversions

1.) 3,680 g 6.) 0.25 L

2.) 5.68 m 7.) 0.6 kg

3.) 8.7 L 8.) 8.9 m

4.) 0.025 g 9.) 0.004 mm

5.) 1.01 mm 10.) 250,000 mg

Measurement Lab (pages 10 & 11)Measurement Lab (pages 10 & 11)

In the lab today make sure to In the lab today make sure to measure using centimeters (cm) measure using centimeters (cm) for length (measure to the 100for length (measure to the 100thth place 0.00) place 0.00)

The graduated cylinder measures The graduated cylinder measures volume in milliliters (mL) volume in milliliters (mL) (measure to the 10(measure to the 10thth place 0.0) place 0.0)

Measurement Post LabMeasurement Post Lab

Please get out your Please get out your measurement measurement labslabs and your and your Chapter 3 bookletsChapter 3 booklets

You will have 25 minutes to finish You will have 25 minutes to finish your labs, otherwise it is homework your labs, otherwise it is homework tonight. tonight.

Chapter 3 quiz is on Thursday!Chapter 3 quiz is on Thursday!

Entrance Ticket 9/17/14Entrance Ticket 9/17/14**Have out CH 3 booklets and practice worksheetHave out CH 3 booklets and practice worksheet1.1. How many milliliters (mL) is 2.67 Liters (L)?How many milliliters (mL) is 2.67 Liters (L)?2.2. How many kilograms (kg) is 3,800 grams How many kilograms (kg) is 3,800 grams

(g) ?(g) ?3.3. Convert 4,500 centimeters (cm) to meters Convert 4,500 centimeters (cm) to meters

(m)?(m)?

**Wait for my help for #4 and #5…Wait for my help for #4 and #5…4.4. How many meters is 6.67 micrometers?How many meters is 6.67 micrometers?5.5. How many nanograms is 0.082 grams?How many nanograms is 0.082 grams?

* CH 3 quiz tomorrow! I will be collecting * CH 3 quiz tomorrow! I will be collecting measurement labs, practice & bookletsmeasurement labs, practice & booklets

AnswersAnswers

1.1. 2,670 mL2,670 mL

2.2. 3.8 kg 3.8 kg

3.3. 45 m45 m

4.4. 0.00000667 m0.00000667 m

5.5. 82,000,000 ng82,000,000 ng

Chpt. 3 quiz reviewChpt. 3 quiz review1.1. Put 0.0000038 into scientific notationPut 0.0000038 into scientific notation

2.2. How many significant figures in 0.0060m?How many significant figures in 0.0060m?

3.3. What is 110.008mL rounded to 4 sig figs?What is 110.008mL rounded to 4 sig figs?

4.4. What is the product of 3.62cm x 8.1cm?What is the product of 3.62cm x 8.1cm?

5.5. What is the sum of 45.870mL + 16.3mL?What is the sum of 45.870mL + 16.3mL?

6.6. What are accuracy, precision and error?What are accuracy, precision and error?

7.7. What does the prefix micro mean?What does the prefix micro mean?

8.8. What is -70 What is -70 °C°C in Kelvin? in Kelvin?

9.9. Which digit is the number 1,092 rounded to?Which digit is the number 1,092 rounded to?

AnswersAnswers1.1. 3.8 x 103.8 x 10-6-6

2.2. 2 sig figs2 sig figs3.3. 110.0 mL110.0 mL4.4. 29 cm29 cm22

5.5. 62.2 mL62.2 mL6.6. Accuracy is how close a measurement is to the Accuracy is how close a measurement is to the

actual value. Precision is how close as set of actual value. Precision is how close as set of measurements are to each other. Error is the measurements are to each other. Error is the difference between your measurement and the difference between your measurement and the actual value.actual value.

7.7. Micro means 10Micro means 10-6 -6 or 1 millionthor 1 millionth8.8. 203 K203 K9.9. 1092 is rounded to the ones place, the “2”1092 is rounded to the ones place, the “2”

Entrance Ticket 10/2/11Entrance Ticket 10/2/11

Please get out your measurement Please get out your measurement labs and your Chapter 3 booklets labs and your Chapter 3 booklets

Write down tonight’s homework Write down tonight’s homework which is to read 4.1 and do which is to read 4.1 and do problems 1-7 at the end of the problems 1-7 at the end of the section.section.