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Unit 1: Measurement
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Matter Everything is made of _________ Matter is described as anything that has volume and mass. ______________ is the amount of space an object takes up. ___________ is the amount of matter in an object.
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Mass The unit for mass is the ______________ (kg). Mass is different from weight. Your weight factors in the effect of gravity.
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How do we measure Volume? * Volume = amount of space an object takes up 1.Direct measurement (using a metric ruler) 2.Water displacement
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1.Direct Measurement For a Solid _____________ Object (rectangular prism): Volume = ____________________________ Volume Unit = _________ ** 1ml = 1cm^3
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Volume Example Volume = LxWxH Volume = 7 x 4 x 2 = 56cm
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Problems 1.
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Problems 2.
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Problems 3.
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2. Liquid Volume & Water Displacement Method Liquid Volume -Use a _____________________ cylinder -Remember: 1mL = 1cm^3 Water Displacement Method -Used for objects with an ___________ shape -Anything other than a square or rectangle
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TedED Video 1.Why couldn’t Archimedes find the volume of the crown by measuring it with a ruler? ________________________________
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Water Displacement -Essentially, however much water is __________________ (pushed out of the way) by the object= ______________ of the object.
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Example: Before Rock = ________ mL After Rock = ________ mL Rock Volume = ____
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Example: Before Rock = _______ mL After Rock = _______ mL Rock Volume = ____
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1.With Object: ________ mL2. With Object:________ mL W/out Object: ________ mL W/out Object: ________ mL Volume: ________ mL Volume: ________ mL
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The Metric System
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Metric Conversion Chart
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Metric Scale Basic Units Include: Meters Liters Grams Watts Newtons Kilo Hecto Deca Base Deci Centi Milli
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Kilo Hecto Deca Base Deci Centi Milli K____________ H____________ D____________ B____________ D____________ C____________ M____________ 1000 100 10 Base 0.1 0.01 0.00 1
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K H Da B D C M Let’s look at a metric ruler. 1.How many meters are in a meter? _______ 2.How many decimeters are in a meter? ____ 3.How many centimeters are in a meter?____ 4.How many millimeters are in a meter?_____
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K H Da B D C M Let’s look at a metric ruler in the other direction. 5. How many meters are needed to make a decameter? ___________ 6. How many meters are needed to make a hectometer? __________ 7. How many meters are needed to make a kilometer? ___________
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Check 4 Understanding For the following units, state if they are smaller or larger than a meter. a. centi _____________________ b. hecto _____________________ c. deca _____________________ d. deci _____________________
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K H Da B D C M 47424.6 mL = __________ Hl -Put your finger on the units that you are given (which are mL) on the scale above. -Move your finger left to hL, and count the number of places you have moved. -Move the decimal the name number of places in the same direction.
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K H Da B D C M 6.7234 kL = ____________ L (base unit) -Put your finger on the units that you are given (which are kL) on the scale above. -Move your finger right to B, and count the number of places you have moved. (Three to the right). -Move the decimal the name number of places in the same direction.
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Why does an object float on water?
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Density - Density = ratio of the mass to volume of a substance at a given temperature ** Basically, how _______________ ________________the molecules are within that substance. Density Unit = _______________for both liquids and solids
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Which is more dense?
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Formula for Density Density = __________
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Part I: Find the Unknown Quantity A.D= ? V= 100mL M= 50ML
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Part I: Find the Unknown Quantity B. D= ? V= 950mL M= 95g
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Part I: Find the Unknown Quantity C) D= ? V= 40cm^3 M= 20 g
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Part I: Find the Unknown Quantity D) D= ? V= 90cm^3 M= 30g
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Part II: Conversion REMEMBER: Mass is always in __________. Volume is always in ________or ___________. D is always in g/mL or g/cm^3 ** You may need to convert back to g or mL.
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Part II: Converting Before Solving A.D= ? B.V= 1.2L (Convert L to mL 1st) M= 28,800g D=M/V D= B. D= ? V= 100mL M= 1.5kg (Convert kg to g 1st) D= M/V D=
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Part II: Converting Before Solving C. D= ? V= 0.52 L M= 500 mg What do we need to do 1st?
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Temperature Temperature: Measure of the _______________ kinetic energy of the particles in a sample of matter (different from heat) ______________ Energy: Energy of motion
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Three Units of Temperature 1._______________ ( ℉ ) 2._______________ ( ℃ ) -Based on ____________________ 3. _______________ (K)
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Kelvin (K) -Considered international scientific scale for temperature -Notice → no degree symbol -Freezing point of water: _______K -Boiling point of water: ________K
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Absolute Zero Absolute Zero _______ (-459.67 ℉ ) -Hypothetical temperature atoms reach minimum ________________
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Fill in the table. ** 9/5 = 1.8 ** 5/9=.556 Conversion Formulas C to F ℉ = (9/5 x C) + 32 F to C ℃ = 5/9 x (F -32) C to K K = ℃ + 273 K to C ℃ = K -273
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Fill in the table using the formulas. Temperature Scales Fahrenheit ℉ Celsius ℃ Kelvin K Water Boils 212 Body Temperature 37 Room Temperature 293 Water Freezes 0
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Practice 1.“The weather forecaster predicts that today’s high will be 70°.” -Which scale is being used? _____________ -On the Celsius scale? __________________ -On the Kelvin scale? __________________
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Practice 2. “It was so cold yesterday that the temperature only reached 275!” -Which scale is being used? ___________ -On the Celsius scale? ________________ -On the Fahrenheit scale? _______________
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Practice 3. “Today’s temperature of 42° in Chicago set a record high for the month of August.” -Which scale is being used? ___________ -On the Kelvin scale? ________________ -On the Fahrenheit scale? _____________
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