Properties of Matter Mass Volume Density. Mass Mass is the amount of matter in an object. It is...
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Transcript of Properties of Matter Mass Volume Density. Mass Mass is the amount of matter in an object. It is...
Properties of Matter
• Mass
• Volume
• Density
Mass• Mass is the amount of matter in an object.• It is measured with a Triple Beam Balance• The unit of measurement for mass is the
gram (g)• Weight is the pull of gravity on an object. It is not
the same as mass. Weight is measured in Newtons (N)
Volume
• Amount of space an object takes up.
• It is measured in milliliters (ml) or in cubic centimeters (cm3)
• 1 ml = 1cm3
• Volume can be measured with a ruler or a graduated cylinder.
There are three ways to measure volume:
1. Volume of liquids: Place in a graduated cylinder and read the meniscus. The unit is ml.
Volume of regularly shaped objects
• Measure length, width and height with a ruler.
• Insert the values into formula
Volume= length x width x height
• The unit is cm3
Volume of Irregularly Shaped Objects
Displacement Method
1) Put water in graduated cylinder.
2) Place object inside.
3) Record the new volume.
4) Subtract
Density
• Amount of matter in a given amount of space.
• Density is a property that can be used to identify substances. Each substance has a unique density. For example water has a density of 1 g/ml.
• Density= Mass/Volume• Unit g/ml or g/cm3
More about Density
• Water has a density of 1.0 g/ml.• Substances that float in water have a density less than
1.0 g/ml.• Substances that sink in water have density greater than
1.0 g/ml.• As long as a substance does not change in phase, a
change in shape or size does not affect its density.• As a substance changes from solid to liquid to gas the
density decreases. The exception to this rule is water. (ice is less dense than water)
Density
• The substance at the
bottom has the most
density.
The substance at the
top has the least.
Density of different substances