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Measuring Matter. Chapter 2 Section 2. Weight. Weight is a measure of the force of gravity on an object. Would your weight be the same if you were on the moon?. You would weigh about 1/6 of what you weigh on Earth!. MASS. Measurement of the amount of matter in an object. - PowerPoint PPT Presentation
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Measuring MatterChapter 2 Section 2
Weight
•Weight is a measure of the force of gravity on an object.
•Would your weight be the same if you were on the moon?
You would weigh about1/6 of what you weigh on Earth!
MASS
•Measurement of the amount of matter in an object.
•Does your mass change on the moon?
• A physical property
Units of Mass
• International Systems of Unit “SI”
• SI unit of mass is the KILOGRAM.
•How many grams are in a kilogram?
1,000
= 150 grams
= 5 grams
What is my mass?
Volume• The amount of
space that matter occupies.
• Liquids, Solids, & Gases have volume.
Units of Volume• liter (L)
•milliliter (mL)
• cubic centimeter (cm³)
1 Liter bottle = 1,000 milliliters
1 milliliter = 1 cubic centimeter
What is my volume?
= 4.92892159 milliliters
= 355 milliliters
Calculating Volume• Volumes of solids are usually
expressed in cubic centimeters
• Volume = Length x width x height
•Don’t forget to label the units!
•How do you measure the volume of an irregular object?Water level rise = Volume of object in
milliliters
If a penny makes the water go up 4 milliliters,
what is its volume?
4 cubic centimeters
Density• Two materials have the same volume, do they have to have the same mass? NO!
A kilogram of sand takes up much less space than a
kilogram of feathers!
The volumes differ because they have different
densities.
Density relates the mass of a material in a
given volume.
# of grams in one cubic
centimeter
Density of Water•Water at room temperature = 1g/cm³
This means:every gram of water has a
volume of 1 cm³
Density = MassVolume
The End