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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.

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Topic: Measurement

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 cm3


Example:

V = 20 –11.5

V = 8.5 mL

V1 =11.5 mL

V2 = 20 mL


Amount of matter in an object

Grams (g)

TRIPLE BEAM BALANCE

Mass




172 g

http://www.wisc-online.com/objects/ViewObject.aspx?ID=gch202


Measures temperature

Tube filled with a fluid such as alcohol

Thermometer


Fahrenheit Scale: Non-metric temp scale

2 scales used to measure temperature

°F


Water freezes = 32°F

Water boils = 212°F

Human body temp = 98.6°F


2.Celsius Scale: Metric scale

°C


Water freezes = 0°C

Water boils = 100°C

Human body temp = 37°C



Let’s summarize…

What is the name of the instrument used to measure mass?

Identify the units used to measure mass.

What instrument is used to measure temperature?

Identify the two temperature scales used. Explain the difference between the two scales.





Review:

1. Which piece of laboratory equipment would be used to obtain the most accurate measure of the volume of a glucose solution?

triple beam balance

graduated cylinder

beaker

metric ruler


2. Which piece of equipment could be used to determine the mass of a frog?

triple beam balance

graduated cylinder

beaker

metric ruler


3. Mass is best defined as the mass of a frog?

size of an object

density of an object

amount of matter in an object

weight of an object


4. The amount of space an object takes up is known as its mass of a frog?

mass

density

volume

matter


5. The units for the volume of a solid is mass of a frog?

mL

mm

L

cm3


6. The basic unit of volume in the metric system is the mass of a frog?

kilogram

gallon

liter

mass


7. The basic unit of mass in the metric system is the mass of a frog?

kilogram

gallon

liter

meter


8. To measure the volume of an irregular solid, a student can use

a triple beam balance

a beaker

displacement in a graduated cylinder

a thermometer


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?

Add 0.5 mL of liquid.

Add 1.5 mL of liquid.

Remove 0.5 mL of liquid.

Remove 1.5 mL of liquid.


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