#  Finding Mass, Volume, and Density. Mass  The amount of matter in an object  Measured in grams (g), milligrams (mg) or kilograms (kg)  Stays the same.

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 Finding Mass, Volume, and Density

Mass  The amount of matter in an object  Measured in grams (g), milligrams (mg) or kilograms (kg)  Stays the same unless matter is removed or added.

Mass  Use the triple beam balance, and the digital balance to find the mass of ten different objects.  Record the objects, and the mass in your science notebook. Object (describe it)Mass (grams)

Volume  Measures the amount of space an object occupies.  1ml = 1 cm 3  Milliliters and Liters for measuring Liquids ( ml, l)  Cubic Centimeters for measuring the volume of solids (cm 3 )

Volume Rectangular Solids  To find the volume of a rectangular solid:  Length x Width x Height  Find the volume of a cubic centimeter.  Find the volume of five other rectangular solids. ObjectLength cm Width cm Height cm Volume cm 3

Volume Liquids  To find the volume of a liquid, use a beaker or a graduated cylinder.  Choose a graduated cylinder to find the following volumes of water, and draw a picture of it in your science notebook.  10 ml, 50 ml, 100 ml, 32 ml, 5 ml

Volume Irregularly Shaped Solids  1 ml = 1 cm 3  Water Displacement Method 1. Pour water into a graduated cylinder 2. Write down the amount of water 3. Place the object into the water 4. Record the new water level 5. Record the number of ml that the water level changed 6. Change ml to cm 3

Volume Irregularly Shaped Solids  Find the Volume of 10 Irregularly Shaped Objects Object (describe it)Volume cm 3

Density  Density is a relationship between mass and volume.  D= Density g/cm 3  M= Mass (g)  V= Volume (ml)  Mass / Volume = Density

Density  Calculate Density 1) A rock has a mass of 25 grams. It’s volume is 5cm 3. Calculate the density of the rock. 2) A book has a mass of 500 grams. The volume of the book is 100cm 3. Calculate density. 3) You found a piece of some sort of metal in your back yard. What would you need to do in order find out exactly what kind of metal it is? Explain

Find the density of some of the objects you measured earlier. If you have volume, find mass and calculate density. If you have the mass, find the volume and calculate density. Object (describe)Mass (grams)Volume (cm 3 )Density g/cm 3

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