1. Scientific Measurements
Dimensional Analysis Part 1

2. Starter
It would take 3,010,000,000,000,000,000,000,000,000 candles to reproduce sunlight. What is this number in scientific notation?
Convert the following temperature to kelvin: 113oC. (K = oC )
A liquid has a volume of 4mL and a mass of 24 grams. What is the density of the liquid?

3. Starter
It would take 3,010,000,000,000,000,000,000,000,000 candles to reproduce sunlight. What is this number in scientific notation? 3.01 x 1027
Convert the following temperature to kelvin: 113oC. (K = oC ) k
A liquid has a volume of 4mL and a mass of 24 grams. What is the density of the liquid?

4. Starter
It would take 3,010,000,000,000,000,000,000,000,000 candles to reproduce sunlight. What is this number in scientific notation? 3.01 x 1027
Convert the following temperature to kelvin: 113oC. (K = oC ) k
A liquid has a volume of 4mL and a mass of 24 grams. What is the density of the liquid?

5. Starter
It would take 3,010,000,000,000,000,000,000,000,000 candles to reproduce sunlight. What is this number in scientific notation? 3.01 x 1027
Convert the following temperature to kelvin: 113oC. (K = oC ) k
A liquid has a volume of 4mL and a mass of 24 grams. What is the density of the liquid? 6 g/mL

6. Converting Metric Measurements
It is important to learn the most common prefixes

7. Converting Metric Measurements Decimal Movement
1. Determine the direction and size of the conversion.

8. Converting Metric Measurements Decimal Movement
2. Move the decimal point in your measurement.

9. Converting Metric Measurements Decimal Movement
3. Add zeros as necessary.

10. Metric Conversion Practice Problems
How many liters are in 872 milliliters?

11. Metric Conversion Practice Problems
How many liters are in 872 milliliters? L

12. Metric Conversion Practice Problems
How many grams are in 0.679kg?

13. Metric Conversion Practice Problems
How many grams are in 0.679kg? 679g

14. Metric Conversion Practice Problems
How many kiloliters are in 4.32×105 liters?

15. Metric Conversion Practice Problems
How many kiloliters are in 4.32×105 liters?
432 kl or 4.32 x 102 kl

16. Dimensional Analysis & Conversion Factors
The procedure we use to convert between units in solving chemistry problems is called dimensional analysis.
Conversion Factor: a factor used to convert between two separate units.

17. Information given x conversion factor = desired unit
Conversion Factors
Conversion Factor: a factor used to convert between two separate units
1 in = 2.54 cm
Information given x conversion factor = desired unit
desired unit
given unit
given unit x
= desired unit

18. Conversion Factors Problem: convert 17.6 in to cm 17.6 in x 2.54 cm
Information given x conversion factor = desired unit
Conversion Factor: 1 in = 2.54 cm
desired unit
given unit
given unit x
= desired unit
Problem: convert 17.6 in to cm
17.6 in x
2.54 cm
1 in
= x cm

19. Conversion Factors Conversion Factor: 1 in = 2.54 cm desired unit
Information given x conversion factor = desired unit
Conversion Factor: 1 in = 2.54 cm
desired unit
given unit
given unit x
= desired unit
2.54 cm
1 in
Problem: convert 17.6 in to cm
17.6 in x
= x
17.6 x cm =

20. Conversion Factors Conversion Factor: 1 in = 2.54 cm desired unit
Information given x conversion factor = desired unit
Conversion Factor: 1 in = 2.54 cm
desired unit
given unit
given unit x
= desired unit
2.54 cm
1 in
Problem: convert 17.6 in to cm
17.6 in x
= x
17.6 x cm = 44.7cm

21. Conversion Factors Conversion Factor: 1 in = 2.54 cm desired unit
Information given x conversion factor = desired unit
Conversion Factor: 1 in = 2.54 cm
desired unit
given unit
given unit x
= desired unit
1 in
2.54 cm
Problem: convert 57.9 cm to in
57.9 cm x
= x in

22. Conversion Factors Conversion Factor: 1 in = 2.54 cm desired unit
Information given x conversion factor = desired unit
Conversion Factor: 1 in = 2.54 cm
desired unit
given unit
given unit x
= desired unit
1 in
2.54 cm
Problem: convert 57.9cm to in
57.9 cm x
= x

23. Conversion Factors Conversion Factor: 1 in = 2.54 cm desired unit
Information given x conversion factor = desired unit
Conversion Factor: 1 in = 2.54 cm
desired unit
given unit
given unit x
= desired unit
1 in
2.54
Problem: convert 57.9cm to in
57.9 x
= in

24. A Practice Problems Problem: How many feet are equal to 54.7 in?
Information given x conversion factor = desired unit
Conversion Factor: 1 ft = 12 in
desired unit
given unit
given unit x
= desired unit
Problem: How many feet are equal to 54.7 in?

25. A Practice Problems Problem: How many feet are equal to 54.7 in?
Information given x conversion factor = desired unit
Conversion Factor: 1 ft = 12 in
desired unit
given unit
given unit x
= desired unit
Problem: How many feet are equal to 54.7 in?
4.56 ft

26. Problem: convert 7.8 km to miles
Practice Problems
Information given x conversion factor = desired unit
Conversion Factor: 1 km = mi
desired unit
given unit
given unit x
= desired unit
Problem: convert 7.8 km to miles

27. Problem: convert 7.8 km to miles
Practice Problems
Information given x conversion factor = desired unit
Conversion Factor: 1 km = mi
desired unit
given unit
given unit x
= desired unit
Problem: convert 7.8 km to miles
4.8 mi

28. When doing dimensional analysis
REMEMBER
Always write every number with its associated unit. Never ignore units; they are critical
Always include units in your calculations, dividing them and multiply them as if they were algebraic quantities. Do not let units magically appear or disappear in calculations.