Lesson 2:
Mass
T. Trimpe 2008 http://sciencespot.net/
Warm up
Which is larger?
1. 1 Pound or 100 Grams
1 pound = 453.6 grams
2. 1 Kilogram or 1 Pound
3. 1 Ounce or 1000 Milligrams
1 ounce of gold =
28,349.5 milligrams
100 kilogram =
220 pounds
Now…
Finish the length activity from
yesterday.
7. Length of your lab table
in hm…
8. Width of your sink in
cm…
9. Length of your pencil in
mm…
Metric Units
Mass refers to the amount of
matter in an object.
Kilogram Prototype
Mass is measured using the
triple beam balance and the
units are grams
Click the image to
watch a short video
about mass.
Kilogram Prototype Image - http://en.wikipedia.org/wiki/Kilogram
Convert…
Which is larger?
A. 1 kilogram or 1500 grams
Kilogram Prototype
B. 1200 milligrams or 1 gram
C. 12 milligrams or 12 kilograms
D. 4 kilograms or 4500 grams
Kilogram Prototype Image - http://en.wikipedia.org/wiki/Kilogram
Warm up
Use the balance to…
1.Find the mass of your pencil.
2.Find the mass of your free reading
book.
Extension
1. Given the liquid in the graduated
cylinder, how will you find the mass
of the liquid only?
2. Given that the liquid in the
graduated cylinder is water, and
using your knowledge of the metric
system, what is the mass of 10 mL
of water?
Warm up
What is the mass of the object in the picture?
_______ + ______ + _______ = ________ g
Top Image: http://www.southwestscales.com/Ohaus_Triple_Beam_750-SO.jpg
Bottom Image: http://www.regentsprep.org/Regents/biology/units/laboratory/graphics/triplebeambalance.jpg
Extension
1. Given the liquid in the graduated
cylinder, how will you find the mass
of the liquid only?
2. Given that the liquid in the
graduated cylinder is water, and
using your knowledge of the metric
system, what is the mass of 10 mL
of water?