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Published byEstefania Binney Modified over 2 years ago

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What is Volume Volume is defined as the amount of space taken up by a three-dimensional object.

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Volume often refers to liquid volume, which is defined as the amount of space taken up by a liquid, which spreads completely to fill its container.

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Volume of Liquids Reading a Meniscus

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Measuring Volume by Displacement Used for irregular shaped objects Select a graduated cylinder large enough to put the object in Add water - at least 10 mL and record accurately

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SLOWLY add the object to be measured: rubber stopper slug metal cylinder Read the new level of the water The water will rise an amount equal to the volume of the object

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What not to do

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Here’s what the cylinder should look like

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Do the math 1. Original reading of volume 2. Final volume of water 3.This will equal the volume of the object 22.5 mL mL = 5.1 mL Therefore, the volume of the object by displacement is 5.1 mL

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A penny is a flat cylinder – could calculate the volume by direct measurement.

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12 Value of Error in Minting Pennies How close the individual volumes are to each other Calculate as follows % error = average volume - actual volume actual volume % error = error in minting the pennies The smaller the %error, the better the precision in making of the pennies.

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13 Example: % error in minting pennies = average volume - actual volume actual volume % error in minting pennies = 1.2g - 1.4g 1.4g = 0.14 X 100% = 14 % So there is a 14% error in minting of these particular pennies

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When are Equal Volumes Not Equal? 100mL 250mL 250 mL

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Procedure Ruler “equivalent volume” Measure level of water as each “equivalent volume” is added.

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