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Only copy the slides that have this background
(spiral notebook)
MetricSystem
Part 3Volume
What is Volume ?
• Volume is a measure of how much
space something takes up
3 Methods of Measuring Volume
• Measure the volume of a
liquid directly using
glassware
Method # 1:
Meniscus
Definition: the curved
surface of liquid in a container
Practice:
53 mL
Practice:
11.5 mL
Practice:
6.6 mL
Method # 2:
• Calculate the volume of a regularly shaped solid using geometry
Geometric Formulas:• Volume of a cube is ….
l x w x hi.e. 4cm x 5cm x 2cm = 40 cm3
i.e. x (5cm)2 x 10cm = 785 cm3
•Volume of a cylinder is ….
r2 h
NOTE:Volume can be measured in:
liters (L), milliliters (mL),
etc.
cubic meters (m3)
cubic centimeters (cm3), etc.
OR…
• It uses the decimal system (10’s!)
• It is an International Standard.
• The units relate to each other.*
Benefits of the Metric System:
Remember this slide?
The units relate…. 1 cm1 cm3 3 = 1 mL = 1 mL
1 mL H1 mL H22OO
= 1 cm= 1 cm3 3 HH22OO
= 1 g H= 1 g H22OO
using water as a standard:
Typically,
mL or L are used to describe the volume of a liquid...
…and cm3 or m3 are used to describe the volume of a regularly shaped solid.
Method # 3:Calculate the volume of an
irregularly shaped solid using water
displacement
Use water displacementto find the volume of objects with weird shapes:
Use Water Displacement to find the volume of an irregularly shaped solid, such as a rock:
22 ml 32 ml
A formula for water displacement:
V = Vf - Vi Volume of Object =
(Final Volume) - (Initial Volume)