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

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!!!!

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

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

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

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

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

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

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…

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…

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…

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

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

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?

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)

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

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

 Well fine… what are these prefixes?

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

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

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

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

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…

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!!!!

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!

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

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

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

Good Accuracy Good Precision Good Accuracy Poor Precision Poor Accuracy Good Precision Poor Accuracy Poor Precision

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

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?