1. Lesson 2: Mass T. Trimpe 2008 http://sciencespot.net/

2. Warm up Which is larger? 1. 1 Pound or 100 Grams 2. 1 Kilogram or 1 Pound 3. 1 Ounce or 1000 Milligrams 1 pound = 453.6 grams 100 kilogram = 220 pounds 1 ounce of gold = 28,349.5 milligrams

3. 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…

4. Metric Units Mass refers to the amount of matter in an object. 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 Kilogram Prototype Image - http://en.wikipedia.org/wiki/Kilogram

5. Convert… Which is larger? Kilogram Prototype Kilogram Prototype Image - http://en.wikipedia.org/wiki/Kilogram A.1 kilogram or 1500 grams B.1200 milligrams or 1 gram C.12 milligrams or 12 kilograms D.4 kilograms or 4500 grams

6. Warm up Use the balance to… 1.Find the mass of your pencil. 2.Find the mass of your free reading book.

7. 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?

8. Warm up 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 What is the mass of the object in the picture? _______ + ______ + _______ = ________ g

9. 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?