1. Scientific experiments often involve measurements as part of data.
∙ are quantitative
∙ include units as well as a numerical value

2. Metric System
10’s
a base unit for each type of measurement
Length – meter
Volume – liter
Mass – gram

3. Prefixes attach to base k kilo 1000 103 h hecto 100 102 da deka 10 101
d deci
c centi
m milli
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μ micro

4. Metric Conversions ∙ converting from a larger unit to a smaller unit:
the number gets bigger
the decimal is moved right
∙ converting from a smaller unit to a larger unit:
the number gets smaller
the decimal is moved left

5. 1 dm3 = 1L kg H20
1 dm
1 dm
1 dm
1 cm
1 cm3 = 1mL g H20
1 cm
1 cm

6. Amount of space occupied
Measuring Volume
Amount of space occupied
Liquid
Graduated Cylinder
10 mL to the nearest 0.1 mL
100 mL to the nearest 0.5 mL (end in .0 or .5)
Proper eye position

8. Graduated cylinder – water displacement
Regular Solid
V = l x w x h
V = 6 cm x 4 cm x 3 cm = 72 cm3
Irregular Solids
Graduated cylinder – water displacement
4 cm
3 cm
6 cm
16.5 mL
– 10.0 mL
10.0 mL
16.5 mL
6.5 mL

9. Measuring Mass
Amount of material in an object
Use a balance – nearest 0.01g

10. Use a ruler – nearest mm or 0.1 cm
Measuring Length
Use a ruler – nearest mm or 0.1 cm
1.5 cm
0.7 cm
2.0 cm