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Density, Mass, & Volume. Concepts & Equations Mr. Abud. Mass. Measurement of the amount of matter, or stuff, an object has Measured in grams (g). Volume. Measurement of the amount of space an object takes up Measured in milliliters (mL) or cm 3. Volume of a regular shaped object.
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Density, Mass, & Volume Concepts & Equations Mr. Abud
Mass • Measurement of the amount of matter, or stuff, an object has • Measured in grams (g)
Volume • Measurement of the amount of space an object takes up • Measured in milliliters (mL) or cm3
Volume of a regular shaped object • Rectangular Prism • Length x width x height • Cylinder • Area of circular base (pi x radius2) x height
Density • Measurement of the amount of mass an object has per its volume • Derived unit: g/mL • Comes from units of mass per units of volume
Measuring Volume INDIRECTLY • Some objects are irregularly shaped • So it’s hard to find out their volume • We need a method of getting their volume though. • INDIRECT MEASUREMENT • Water displacement • Put an irregular shaped object in water, measure how much the water rises, and that’s the object’s volume
What is density? • Density is a comparison of how much matter there is in a certain amount of space.
Which one is more dense? • Demonstration: People in a square • How about this: Which square is more dense?
Which one is more dense? • Demonstration: People in a square • How about this: Which square is more dense? More dense
Which one is more dense? • Now which one is more dense?
Which one is more dense? • Now which one is more dense? More dense
Ways to Affect Density • Change mass AND keep volume same • Change volume AND keep mass same
Change Mass AND Keep Volume Same • Increase the mass increase density • Decrease the mass decrease in density Which container has more density? A B
Change Volume AND Keep Mass Same • Increase the volume decrease density • Decrease the volume increase density Which container has more density? A B
What 2 ways will INCREASE density? Keep the same mass AND decrease the volume Keep the same volume AND increase the mass
What 2 ways will DECREASE density? Keep the same mass AND INcrease the volume Keep the same volume AND DEcrease the mass