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# Science 71

Science 71. Mr. Mullett September 2, 2011 - Day 4 of 180. Science 71(11-12) = pgcv2g Science 71A(11-12) = qscksd Science 71C(11-12) = fvj9yf Science 71D(11-12) = 2kijyf Science 71E(11-12) = 6amsue Science 71F(11-12) = k8b5mk SMS Homework = 7r80hf. Agenda. Lab Safety Lab Coats

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## Science 71

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1. Science 71 Mr. Mullett September 2, 2011 - Day 4 of 180

2. Science 71(11-12) = pgcv2g Science 71A(11-12) = qscksd Science 71C(11-12) = fvj9yf Science 71D(11-12) = 2kijyf Science 71E(11-12) = 6amsue Science 71F(11-12) = k8b5mk SMS Homework = 7r80hf

3. Agenda • Lab Safety • Lab Coats • Glassware • Clean Tables • Density lab – Continue • Sign-off on Part 1 Task 1 & 2 • GOAL – Collect Data, math can occur Later!

4. Definitions • Density- The amount of Mass per Volume (D=m/V) Water = 1.0 g/cm3 • Volume – the measurement of the space that an object occupies (3D - LxWxH) Discussed in MATH • Mass – the amount of matter in an object

5. Techniques • Length • Never use the end of the ruler. Why? • Do not round, always try to be as accurate 1.75 vs. 2.0 • Volume • Do not round, always try to be as accurate 1.75 vs. 2.0 • Use the bottom of the meniscus when measuring with graduated cylinders. Use clickers. What is the volume?

6. Begin With Partners • Begin completing the hand out on Measurement of Length and Volume. • Work in partners, be prepared to switch half-way through. (Clothes, Bday Month) • What isn’t completed is HOMEWORK • IN ADDITION, begin completing the pretest handout. Due by Friday in class. Not graded, but benefiting you if you take it seriously.

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