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

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

Prefixes attach to base k kilo 1000 103 h hecto 100 102 da deka 10 101 d deci 0.1 10-1 c centi 0.01 10-2 m milli 0.001 10-3 King Henry Died By Drinking Chocolate Milk μ micro 0.000001 10-6

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

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

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

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

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

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