Catalyst – January 52, 2010
Monday Mystery Element!
1. Used to make spark plugs
2. Alkaline Earth metal
3. Used as green coloring in fireworks
Catalyst – January 52, 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 Door
Projector2nd 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,
JacobGroup 9
Group 8
Ashley, Marlon, Durand, Agelica
Group 7
Josh D., Taylor,
Lashannia, [Johnathan]
Group 5
Quincy, Angel,
Rodneisha O., eidi
Front Door
Projector4th 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 Door
Projector5th 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 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 2nd 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 4th 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 5th 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?
yotta- (Y-) 1024 1 septillion
zetta- (Z-) 1021 1 sextillion
exa- (E-) 1018 1 quintillion
peta- (P-) 1015 1 quadrillion
tera- (T-) 1012 1 trillion
giga- (G-) 109 1 billion
mega- (M-) 106 1 million
kilo- (k-) 103 1 thousand
hecto- (h-) 102 1 hundred
deka- (da-) 10 1 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
Well… ok, we generally only use a few of the prefixes…Prefix Multiplier Power of ten
giga, G 1,000,000,000 (billion) 109
mega, M 1,000,000 (million) 106
kilo, k 1,000 (thousand) 103
hecto, h 100 (hundred) 102
deka, da 10 (ten) 101
BASE 1 100
deci, d 1/10 (tenth) 10-1
centi, c 1/100 (hundredth) 10-2
milli, m 1/1,000 (thousandth) 10-3
micro, µ 1/1,000,000 (millionth) 10-6
nano, n 1/1,000,000,000 (billionth) 10-9
Figure it out! Fill in the blanks!1. 1,000 milligrams = 1 gram2. 10 meters = 1 dekameter3. 1,000,000,000 liters = 1 gigaliter4. _____________ centimeters = 1 meter5. 1,000,000 micrograms = _________
gram6. 200 meters = ____________
hectometers
Figure it out! Fill in the blanks!1. 1,000 milligrams = 1 gram2. 10 meters = 1 dekameter3. 1,000,000,000 liters = 1 gigaliter4. _____________ centimeters = 1 meter5. 1,000,000 micrograms = _________
gram6. 200 meters = ____________
hectometers
1001
2
Prefixes can be used for all units Let’s use a milli- for an example You can have a…
Milligram – one-thousandth of a gram
Millimeter – one-thousandth of a meter
Milliliter – 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!
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!