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.

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Presentation Transcript
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

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

beaker

metric ruler

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

triple beam balance

beaker

metric ruler

3. Mass is best defined as the

size of an object

density of an object

amount of matter in an object

weight of an object

a triple beam balance

a beaker

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?

Remove 0.5 mL of liquid.

Remove 1.5 mL of liquid.