Check-in
•Which of the following can be classified as matter?
a. a beam of sunlight
c. an idea
e. rain
b. an automobile
d. your breath
f. happiness
Lesson 4: Mass Communication
•Mass and Volume
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U1, L4: Mass and Volume
Daily Question (copy this): How can you measure the mass and
volume of an object, and how are they related?
ChemCat (write answer only):
1. Which has more mass and weighs more, 5 kilograms of bricks
or 5 kilograms of feathers? Explain your thinking.
2. Would it hurt more to be hit with 5 pounds of feathers or 5
pounds of bricks? Explain your thinking.
Summary from yesterday - Lily
You will be able to:
•
•
measure mass using a balance
measure the volume of regularly and irregularly shaped
objects
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Prepare for the Lab (cont.)
•In this lab, you will be measuring volume with a graduated
cylinder.
To the nearest hundredth
of a milliliter, the volume of
liquid is 5.52 mL.
Notes (Right hand page)
What is mass?
How do we measure it?
3
Volume
What is volume?
How can we measure it?
Note about units: 1 mL = 1 cm3
How are mass and volume related?
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Wrap Up
•How do you determine the masses and volumes of substances?
– Mass is a measure of the amount of substance. Mass can be
measured using an electronic or triple beam balance.
– Volume is the amount of space occupied by an object. The
volume of a liquid can be measured in a graduated cylinder.
– Objects with similar volumes can have different masses, and
vice versa.
Student summary today - Caroline
Student summary tomorrow - Jovanni
HW: Read U1, L4 and take notes. Start on problem set #1.
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