1. Do Now:
Use the scientific method to evaluate one of the following statements:
American gymnasts are the best all-around gymnasts in the world.
People who stay mentally active (reading, puzzling, interacting with others) as they age develop Alzheimer’s significantly less often.

2. What is a Unit Conversion?
A unit conversion is a changing of one unit to another.
Unit Examples:
meters
grams
inches
feet
pounds
seconds
Any time you write down a number in chemistry, you should have a unit written after it!!!
What is unit conversion?
Changing one unit to another
Example: meters to grams
Always needed in Chem.
CLE.3231.Math.1 Graph relationships and functions between manipulated (independent) variables and responding (dependent) variables.CLE.3231.Math.2 Solve for variables in an algebraic formula.

3. What is a Metric Unit? What is a metric unit? Meters, Liters, Grams
Metric units are the universally excepted units around the world (except for the US). They are the easiest to convert.
Metric Unit Examples:
meters
liters
grams
What is a metric unit?
Meters, Liters, Grams
Base units: m, l, g
All others based off of B.U. (km, cm, ml, kg)
Base Units – all other metric units are based off of these (km, cm, ml, kg)
CLE.3231.Math.1 Graph relationships and functions between manipulated (independent) variables and responding (dependent) variables. CLE.3231.Math.2 Solve for variables in an algebraic formula.

4. Common Metric Units (Prefixes)
Abbreviation
Mega- M
kilo- k
hecto- h
deka- da or D
Base- m, l, g
deci- d
centi- c
milli- m
micro- µ
nano- n
Common Metric Prefixes
Kilo (k)
Hecto (h)
Deka (da)
Base (m, l, g)
Deci (d)
Centi (c )
Milli (m)
CLE.3231.Math.1 Graph relationships and functions between manipulated (independent) variables and responding (dependent) variables.CLE.3231.Math.2 Solve for variables in an algebraic formula.

5. Metric Conversion Factors
Basic Conversion Factors
1 km= 1000 m
100 cm= 1 m
1000 mm = 1 m
10 mm = 1 cm
Want g or l? Just replace the m—so
100 cg = 1 g
1 km= 1000 m
100 cm= 1 m
1000 mm = 1 m
10 mm = 1 cm
Knowing these conversion factors makes calculating conversions easy!
These also work for liters and grams. Just replace the base unit (m) with a (g) or (l).
CLE.3231.Math.1 Graph relationships and functions between manipulated (independent) variables and responding (dependent) variables.CLE.3231.Math.2 Solve for variables in an algebraic formula.

6. A Pictographic Assist:
Key Term
Notes

7. You try one with a partner (choose based on SI comfort level)
Easy:
4 meters = _________decimeters
Medium
3 kiloliters = __________ milliliters
Challenging
743.8 mg = _____________hg

8. Attempt one on your own:
Easy
How many milliliters are in a cubic meter? (There are 1,000 L in 1 m3 )
Medium
How many hours are there in 34.5 years?
Challenging
How many miles are there in 3.44 x 108 inches? There are 0.61 miles in 1 km).

9. Mathematical Models (AKA Dimensional Analysis):
Math. Models/ Dimensional Analysis
A mathematical way to convert between units
Uses a conversion factor
A mathematical way to convert one unit to another. This works for metric units and non-metric (English) units.
This works by taking the unit you are given and multiplying it by a conversion factor.

10. As a Class: Convert 3m to cm
Question Section
Notes
For meters to cancel out, meters in the conversion factor must be on the opposite side of the fraction (fence). 3m
100 cm 1m
Given
Conversion Factor
Multiply every number on top of the fence and divide by the bottom.
CLE.3231.Math.1 Graph relationships and functions between manipulated (independent) variables and responding (dependent) variables.CLE.3231.Math.2 Solve for variables in an algebraic formula.

11. With a Partner: Convert 1516 g to kg
conversion factor
CLE.3231.Math.1 Graph relationships and functions between manipulated (independent) variables and responding (dependent) variables.CLE.3231.Math.2 Solve for variables in an algebraic formula.

12. On your own Problem 1 Convert 1200 cm to m.
CLE.3231.Math.1 Graph relationships and functions between manipulated (independent) variables and responding (dependent) variables.CLE.3231.Math.2 Solve for variables in an algebraic formula.

13. On your own Problem 2 Convert 5200 mL to L.
CLE.3231.Math.1 Graph relationships and functions between manipulated (independent) variables and responding (dependent) variables.CLE.3231.Math.2 Solve for variables in an algebraic formula.

14. More Difficult: Convert 7200mm to km
100,000 cm
10 mm
1 cm
= km
CLE.3231.Math.1 Graph relationships and functions between manipulated (independent) variables and responding (dependent) variables.CLE.3231.Math.2 Solve for variables in an algebraic formula.

15. On your own Problem 3 Convert 3 m to mm.
CLE.3231.Math.1 Graph relationships and functions between manipulated (independent) variables and responding (dependent) variables.CLE.3231.Math.2 Solve for variables in an algebraic formula.

16. Do Now: How many centimeters are there in 2 meters?
Create a mathematical model that proves your response:

17. Whiteboard Showdown:
Select a member of your team (which is your row) to compete against the other teams.
Write the correct answer as fast as possible and show that answer to your opponent.
First to show the correct answer wins the round and moves on to the next round (and gives a point to their team).
The last standing person wins a piece of candy.
Team with the most points also wins a candy for each member!
All members of team must participate.

18. Round One

19. What is the abbreviation for milligram?
Question
What is the abbreviation for milligram? mg

20. Question
What term is defined as an educated guess that must be based on research?
hypothesis

21. What is the number of kilograms in 500g?
Question
What is the number of kilograms in 500g?
0.500kg

22. Round Two

23. Water—for 20 minutes Question
What substance should be applied to your skin FIRST if acid is spilled on it?
Water—for 20 minutes

24. What is the number of liters in 47.3ml?
Question
What is the number of liters in 47.3ml?
0.0473ml

25. Peer Review—used to verify scientific findings
Question
What is the name of the process where scientists review the work of their fellow scientists?
Peer Review—used to verify scientific findings

26. Round Three

27. Tell your instructor immediately.
Question
What do you do if your lab equipment is broken?
Tell your instructor immediately.

28. What is the number of meters in 1.34 kilometers?
Question
What is the number of meters in 1.34 kilometers?
1340 m

29. What is the abbreviation for dekaliter?
Question
What is the abbreviation for dekaliter?
dal or daL

30. Round Four

31. What is the word you should yell out if a classmate is hurt in lab?
Question
What is the word you should yell out if a classmate is hurt in lab?
Code One!

32. Question
7426 mm = _________m
7.426 m

33. What is the word you should yell out if a classmate is hurt in lab?
Question
What is the word you should yell out if a classmate is hurt in lab?
Code One!

34. Round Five

35. What is the number of liters in 47.3ml?
Question
What is the number of liters in 47.3ml?
0.0473ml

36. What variable responds to the change you control in a lab?
Question
What variable responds to the change you control in a lab?
Dependent Variable.

37. Add acid to water to avoid burns.
Question
What is the correct process to dilute an acid?
Add acid to water to avoid burns.

38. Challenge
Round 1

39. Draw the mathematical model for: 5200 mL : __________L
Challenge Question 1:
Draw the mathematical model for: 5200 mL : __________L

40. Answer Challenge Problem 1:
Convert 5200 mL to L.
CLE.3231.Math.1 Graph relationships and functions between manipulated (independent) variables and responding (dependent) variables.CLE.3231.Math.2 Solve for variables in an algebraic formula.

41. Challenge Question 2:
Draw the mathematical model to show the number of cm in 3 feet? GIVEN: 2.54 cm in 1 inch

42. Challenge Question 2:
Draw the mathematical model to show the number of cm in 3 feet? GIVEN: 2.54 cm in 1 inch 3 feet 12 in 2.54 cm = cm 1 foot 1 inch

43. Challenge Question 3:
Draw the mathematical model to show the number of seconds in a 15 year-olds life?

44. Challenge Question 3:
Draw the mathematical model to show the number of seconds in a 15 year-olds life? 15 yrs 365 days 24hr 60 min 60 sec = 473,040,000 1 year 1 day 1 hr 1 min