2. Catalyst – January 5 2, 2010 Monday Mystery Element! 1. Used to make spark plugs 2. Alkaline Earth metal 3. Used as green coloring in fireworks

3. Catalyst – January 5 2, 2010 Monday Mystery Element! 1. Used to make spark plugs 2. Alkaline Earth metal 3. Used as green coloring in fireworks BARIUM!!!!

4. Today’s Agenda  Catalyst  New Groups and Quiz 1.1 Tracking!  Short Diagnostic  Standard International Units  Prefixes – it just makes too much sense  Accuracy and Precision  How accurate/precise are you?  Exit Question

5. Today’s Objectives  SWBAT identify and use SI units and SI prefixes.  SWBAT distinguish between accuracy and precision.

6. Front DoorProjector 2 nd Period Group 3 Annquinette, J’Nae, Josh T., Kayla Group 2 Jeremiah, Montronquie, LaRatio, Sedric Group 1 Chris, Johneisha, Rodneisha K., Akiya Group 6 Tierra, Tracy, Tyler, Brandi Group 4 Keiara, Johnika, Howard, Jacob Group 9 Group 8 Ashley, Marlon, Durand, Agelica Group 7 Josh D., Taylor, Lashannia, [Johnathan] Group 5 Quincy, Angel, Rodneisha O., eidi

7. Front DoorProjector 4 th Period Group 3 Celeste, Hannah, Treshon, Darneisha Group 2 Brittney, Jarion, Jemeca, Kendall Group 1 Mankisha, Desmond, Wilbert, Taylor Group 6 Tatiyaan, Katie, Holloway, Cornell Group 4 Deston, Selena, Quoc, Thuy Group 9 Brhea, Martha, Kevin Group 8 Kenisha, Jamal, Jeanette Group 7 Raven, Kendall, Chasity Group 5 Haley, Adam, Arthur, Stephen

8. Front DoorProjector 5 th Period Group 3 Jandolyn, Qiana, Ida, Dominique Group 2 Gina, Breonne, Granville, Tyler Group 1 J’Don, Felix, Desman, Erica Group 6 Timberly, Jesse, Breionna, Nathan Group 4 Aujuan, Stephon, Jasmine, Mikell Group 9 Group 8 Mason, Brianna, Chyna, Paul Group 7 Rikki, Justin, Mario, Chassidy Group 5 Natosha, James, De’Jonel, Maghan

9. Quiz 1.1 Class Averages (Grade) 2 nd Period: 86 4 th Period: 85 5 th Period: 87 Ms. Stroh:

10. Quiz 1.1 Chemistry Super Studs!!!  Angel Alexander  Josh Detiege  Durand Jason  Rodneisha Kennard  Howard LaCour  Jacob Lefort  Johneisha McGary (100!)  Rodneisha O’Gwinn  Ashley Pittman  Marlon Vance  Taylor Watkins  LaRatio Wiley Students who got an A in 2 nd Period…

11. Quiz 1.1 Chemistry Super Studs!!!  Tatiyaan Bailey  Mankisha Brown  Hannah Collins  Quoc Dinh  Treshon Hunter  Kenisha Jackson  Taylor Tilquit  Brhea Washington  Brittney Wiley (100!)  Martha Young Students who got an A in 4 th Period…

12. Quiz 1.1 Chemistry Super Studs!!!  Rikki Bell  Aujuan Brown  DeJonel Garbutt  Stephon Gordon  Ide Henry  Felix Mari  Paul Matherne  Justin McKnight  Chyna Washington Students who got an A in 5 th Period…

13. Quiz 1.1 Tracking  Go through quiz  Count number of points CORRECT for each GLE  Calculate percent mastery by dividing CORRECT points by the POSSIBLE POINTS and then multiplying that decimal by 100  Draw a line graph to show mastery  Check off if you got 85% or above mastery

14. Short Diagnostic  You have 4 minutes to show me what you know!  We will go over the answers while taking notes!

15. Measurement Notes Key Point #1: Scientists have a standard international way of measuring volume, mass, and length known as SI Why do you think scientists do this?

16. Standard International Units  Volume is the amount of space an object takes up; measured in liters (L)  Mass is the amount of matter in an object; measured in grams (g)  Length is the distance from one point to another; measured in meters (m)

17. What unit should you use to answer the following questions??? 1. How far is it from the Earth to the Sun? 2. How much water can I fit into the beaker? 3. How much matter can we put on the table before it breaks? METERS LITERS GRAMS

18. Prefixes Key Point #2: You can use prefixes to adjust the value of each of these units. Why would scientists do this?

19.  Well fine… what are these prefixes?

20. yotta- (Y-)10 24 1 septillion zetta- (Z-)10 21 1 sextillion exa- (E-)10 18 1 quintillion peta- (P-)10 15 1 quadrillion tera- (T-)10 12 1 trillion giga- (G-)10 9 1 billion mega- (M-)10 6 1 million kilo- (k-)10 3 1 thousand hecto- (h-)10 2 1 hundred deka- (da-)101 ten deci- (d-)10 -1 1 tenth centi- (c-)10 -2 1 hundredth milli- (m-)10 -3 1 thousandth micro- (µ-)10 -6 1 millionth nano- (n-)10 -9 1 billionth pico- (p-)10 -12 1 trillionth femto- (f-)10 -15 1 quadrillionth atto- (a-)10 -18 1 quintillionth zepto- (z-)10 -21 1 sextillionth yocto- (y-)10 -24 1 septillionth

21. Well… ok, we generally only use a few of the prefixes… PrefixMultiplierPower of ten giga, G1,000,000,000 (billion)10 9 mega, M1,000,000 (million)10 6 kilo, k1,000 (thousand)10 3 hecto, h100 (hundred)10 2 deka, da10 (ten)10 1 BASE110 0 deci, d1/10 (tenth)10 -1 centi, c1/100 (hundredth)10 -2 milli, m1/1,000 (thousandth)10 -3 micro, µ1/1,000,000 (millionth)10 -6 nano, n1/1,000,000,000 (billionth)10 -9

22. Figure it out! Fill in the blanks! 1. 1,000 milligrams = 1 gram 2. 10 meters = 1 dekameter 3. 1,000,000,000 liters = 1 gigaliter 4. _____________ centimeters = 1 meter 5. 1,000,000 micrograms = _________ gram 6. 200 meters = ____________ hectometers

23. Figure it out! Fill in the blanks! 1. 1,000 milligrams = 1 gram 2. 10 meters = 1 dekameter 3. 1,000,000,000 liters = 1 gigaliter 4. _____________ centimeters = 1 meter 5. 1,000,000 micrograms = _________ gram 6. 200 meters = ____________ hectometers 100 1 2

24. Prefixes can be used for all units  Let’s use a milli- for an example  You can have a…  Milli gram – one-thousandth of a gram  Milli meter – one-thousandth of a meter  Milli liter – one-thousandth of a liter  If Lil’ Wayne was really that rich, he’d be singing a mega, a mega, a mega…

25. Let’s go over the Pre-Test! Who’s a balla?!?!?!? Who’s a shot calla?!?!? I hope you all are! If you’re not, come to tutoring!!!!

26. Precision/Accuracy Activity (15 min)  You will need a package of markers, a bullseye, and a ruler.  Follow directions and have fun.  Don’t worry about answering questions at the end….yet!

27.  Now that we got measurement down, let’s talk about accuracy

28. Accuracy  Key Point #3: Accuracy is how close you are to the correct or accepted value of a measurement.  Example of GOOD ACCURACY: Throwing a dart close to the bulls eye  Example of GOOD ACCURACY: If something is known to have a mass of 500 g and you measure 499 g

29. Precision  Key Point #4: Precision is how close a series of measurements are to one another.  REPEATABILITY!  Example of GOOD PRECISION: Throwing a dart and hitting the same spot 3 times in a row

31. Good Accuracy Good Precision Good Accuracy Poor Precision Poor Accuracy Good Precision Poor Accuracy Poor Precision

32. Group Activity  Please answer questions at the end on the back of your group paper  Please leave group assignment in folder!

33. Exit Question Describe the accuracy (A) and precision (P) of 1 & 2. What prefix/unit would you use to measure the volume of cold drink in a can? What prefix/unit would you use to measure the length of your pinky?