topic : m easurement aim : how can we measure mass and temperature?
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Topic : M easurement Aim : How can we measure mass and temperature? Do Now : Scientific Method questions (Hand in Lab Safety Activity) HW:. 9 cm. 8 cm. 10 cm. V = L x W x H. V = 10cm x 8cm x 9cm. V = 720 cm 3. Example:. V = 20 –11.5 V = 8.5 mL. V1 =11.5 mL. V2 = 20 mL. - PowerPoint PPT PresentationTRANSCRIPT
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Topic: MeasurementAim: How can we measure mass
and temperature?
Do Now: Scientific Method questions
(Hand in Lab Safety Activity)
HW:
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10 cm
9 cm
8 cm
V = L x W x H
V = 10cm x 8cm x 9cm
V = 720 cm3
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Example:
V1 =11.5 mL
V2 = 20 mL
V = 20 –11.5
V = 8.5 mL
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• Amount of matter in an object
•Grams (g)• TRIPLE BEAM BALANCE
Mass
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http://www.ohaus.com/input/tutorials/tbb/TBBins.html
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Mass = 542 gm
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172 ghttp://www.wisc-online.com/objects/ViewObject.aspx?ID=gch202
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•Measures temperature
•Tube filled with a fluid such as alcohol
Thermometer
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1.Fahrenheit Scale: Non-metric temp scale
°F
2 scales used to measure temperature
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•Water freezes = 32°F•Water boils = 212°F•Human body temp = 98.6°F
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2.Celsius Scale: Metric scale°C
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•Water freezes = 0°C•Water boils = 100°C•Human body temp = 37°C
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Measuring with a
thermometer
24°C
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Let’s summarize…
1. What is the name of the instrument used to measure mass?
2. Identify the units used to measure mass.
3. What instrument is used to measure temperature?
4. Identify the two temperature scales used. Explain the difference between the two scales.
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Mass = 137.4 gm
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Mass = 25.4 gm
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Mass = 79.4 gm
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Review:1. Which piece of laboratory equipment
would be used to obtain the most accurate measure of the volume of a glucose solution?
a. triple beam balanceb. graduated cylinderc. beaker d. metric ruler
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2. Which piece of equipment could be used to determine the mass of a frog?
a. triple beam balanceb. graduated cylinderc. beaker d. metric ruler
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3. Mass is best defined as the
a. size of an object
b. density of an object
c. amount of matter in an object
d. weight of an object
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4. The amount of space an object takes up is known as its
a. mass
b. density
c. volume
d. matter
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5. The units for the volume of a solid is
a.mL
b.mm
c.L
d.cm3
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6. The basic unit of volume in the metric system is the
a. kilogram b. gallon c. liter d. mass
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7. The basic unit of mass in the metric system is the
a. kilogram
b. gallon
c. liter
d. meter
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8. To measure the volume of an irregular solid, a student can use
a. a triple beam balance
b. a beaker
c. displacement in a graduated cylinder
d. a thermometer
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9. The volume of a liquid is 13.0 mL. What must a student do to obtain a volume of 12.5 mL of liquid in the graduated cylinder?
a. Add 0.5 mL of liquid. b. Add 1.5 mL of liquid. c. Remove 0.5 mL of liquid. d. Remove 1.5 mL of liquid.