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**Metric Mania and Density**

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**Answer the following questions! You may use your notes from yesterday.**

How many significant figures are in each number? Write the following in Scientific Notation. 1.23 70200 0.0045 5000 0.100 9.001 Write in standard form. 2.5 x 107 4.08 x 10-2

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**Metric Conversions Ladder Method**

T. Trimpe

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**KILO, HECTO, DEKA, BASE UNIT, DECI, CENTI, MILLI**

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**How many jumps does it take?**

How do you use the “ladder” method? 1st – Determine your starting point. 2nd – Count the “jumps” to your ending point. 3rd – Move the decimal the same number of jumps in the same direction. 4 km = _________ m Starting Point Ending Point How many jumps does it take? = 4000 m 4. 1 __. 2 __. 3 __.

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**109 g = _______ kg 250 m = _______ km 1 L = _______ mL **

Conversion Practice Try these conversions using the ladder method. 1000 mg = _______ g 109 g = _______ kg 250 m = _______ km 1 L = _______ mL 160 cm = _______ mm 14 km = _______ m

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**Metric Conversion Challenge**

Write the correct abbreviation for each metric unit. Kilogram _____ Milliliter _____ Kilometer _____ Meter _____ Millimeter _____ Centimeter _____ Gram _____ Liter _____ Milligram _____ Try these conversions, using the ladder method. 480 cm = _____ m 5.6 kg = _____ g 8 mm = _____ cm 5.6 m = _____ cm 120 mg = _____ g

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**Use your notes from yesterday and answer the following:**

Compare using <, >, or =. 25) 63 cm m 27) 5 g mg 29) 1,500 mL L

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**Find your name in purple ink and sit at that table.**

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Organization 15 minutes for this section maybe less. Go over notebook setup and lab book setup

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Notebooks You should have a 3 ring binder for class with the following tabs Notes Classwork/ homework Labs Quizzes/Tests/Review Sheets

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**Lab Composition Notebook**

The first page front and back will be for the table of contents. The following pages will need to have the following information at the top Lab Title Date

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DENSITY

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**Volume The amount of space occupied by an object is called its volume.**

V = l x w x h Water Displacement Final water level- initial water level= V

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**Mass -is a measure of the quantity of matter in an object**

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**Density Density is the mass per unit volume of a material.**

You find density by dividing an object’s mass by the object’s volume. D= M/V Draw triangle for this slide on the board

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**You have a sample with a mass of 620 g & a volume of 753 cm3**

You have a sample with a mass of 620 g & a volume of 753 cm3. Find density. G U E S D= 620G/ 753 cm3 D= 0.82 g/cm3

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**A liquid has a density of 0. 87 g/mL**

A liquid has a density of 0.87 g/mL. What volume is occupied by 25 g of the liquid? G U E S

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**An object has a volume of 825 cm3 and a density of 13. 6 g/cm3**

An object has a volume of 825 cm3 and a density of 13.6 g/cm3. Find its mass. G U E S

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**Exit Ticket 164 cm = _________ m 25 mm= _________ km 16g= _________ kg**

Use the GUESS method A piece of tin has a mass of g and a volume of 2.26 cm3. What is the density of tin?

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