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Mass, Volume & Density By: Renata Chebotareva
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Mass, Volume and Density are all physical properties of matter.
Matter is everything in the universe that takes up space. It makes up everything that you can see, feel, taste or touch. Mass, Volume and Density are all measurements that we can take of material objects. We measure stuff to understand it better and to compare it to other stuff.
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Density
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Density measures how heavy something is for it’s size
Density measures how heavy something is for it’s size. We can calculate Density by dividing an objects mass by its volume. For example, the mass of something was 250 grams and the volume was 1,000 cubic centimeters…250/1,000 = So the Density of this cube is 0.25 grams per cubic centimeter!
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Formulas 16,000 g 800 cm3 20 g/cm3 1,000 g 625 mL 1.6 g/mL 250 g
Mass/Volume = Density Mass Volume Density 16,000 g 800 cm3 = 16,000 g 800 cm3 20 g/cm3 Brick 1,000 g 625 mL = 1,000 g 625 mL 1.6 g/mL Soccer Ball 250g 10cm3 = 250 g 10 cm3 25 g/cm3 Ring
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Measurements also help us standardize stuff.
The metric system is used all over the world, so that help scientists compare their discovery's and ideas without too much confusion. Measurements also help us standardize stuff. For example we measure time in hours, minuets and seconds. Can you imagine if we didn’t have time? In the lab we used the metric system to measure stuff. Its basic units are the meter for length the liter for volume and the gram for mass. And if we couldn’t measure the mass, volume and density of objects, we’d be just as confused about what they are and why they act the way they do.
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Mass
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Mass is a measurement of how much matter an object contains
Mass is a measurement of how much matter an object contains. In a lab, we measure it with a balance or a scale. Remember that weight is different than mass. Weight is actually a measurement of the effect gravity has on a object. Weight is measured in Newton's and mass is measured in grams. For example, if something weighs 2.5 Newton on earth, it will weigh 1/6th as much on the moon!
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Formulas Volume x Density = Mass 160 mL 5 g/mL 800 g 80 mL 2.5 g/mL
160 mL x 5 g/mL = 160 mL 5 g/mL 800 g Can of Pop 80 mL x 2.5 g/mL = 80 mL 2.5 g/mL Add Picture of Can of Pop, Apple and Banana 200 g Apple 50 cm3 x 10 g/cm3 = 50 cm3 10 g/cm3 500 g Banana
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Volume
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Volume measured of how much space something takes up
Volume measured of how much space something takes up. If the object is a solid, the volume is measured in cubic centimeters and you can calculate it by multiplying its length, by its width, by its height. Liquid volume is measured in liters. One milliliter takes up the same amount of space as one cubic centimeter.
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Its easy to measure the volume of a cube, but is a littler more difficult with an irregularly-shaped object…like a pebble. Matter displaces liquid – that’s a fancy way of saying it takes up space. . If you can measure the amount of liquid that the object displaced, then you’ve found the volume of the object! For example, If I had a beaker of water that had a volume of 50 milliliters, after I dropped the rock into it, the water level rose to 70 milliliters. So we know that that the pebble has a volume of 20 milliliters, or 20 cubic centimeters, since it’s a solid.
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Formulas Mass/Density = Volume 100 g 0.25 g/mL 400 mL 3,000 g 30 g/cm3
Pillow 3,000 g 30 g/cm3 = 3,000 g 30 g/cm3 Add pictures for Pillow, Book and Pencil from Google Images 100 cm3 Book 100 g 0.625 g/cm3 = 100 g 0.625 g/cm3 160 cm3 Pencil
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Points to remember! Density measures how heavy something is for it’s size. Mass/ Volume = Density Mass is a measurement of how much matter an object contains. Volume x Density = Mass Remember that weight is different than mass. Weight is actually a measurement of the effect gravity has on a object. Weight is measured in Newton's and mass is measured in grams. Volume measured of how much space something takes up. Mass/Density = Volume
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Bibliography Brain POP Measuring Matter
Science Basics Week 2 Density Packet Clip Art Put hyperlink for Google images and for brain pop
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