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Matter & Energy Lesson 1.1
Transcript of Matter & Energy Lesson 1.1
Matter & Energy Lesson 1.1
All objects are made of matter
Matter is what makes up all of the objects and living organisms in the universe.
Matter is anything that:
2.Takes up space
Matter is made of particles called atoms, which are too small to see.
Not everything is matter
1.Light – does not take up space or have mass
2.Sound – travels like waves through air
Mass is a measure of the amount of matter.
Mass - measure of how much matter an object contains
Ex: plastic spoon has less mass than a metal spoon
The standard unit of mass is the kilogram.
Ex: A large grapefruit has a mass of about one-half kilogram.
Smaller masses are measured in grams.
Ex. A penny has a mass between 2 and 3 g
Mass is measured using a balance.
triple beam balance & pan balance
Weight – the downward pull of an object due to
Weight is measured by using a scale.
The standard scientific unit for weight is the
A common unit for weight is the pound (lb.).
Mass and weight are closely related, but THEY ARE NOT THE SAME!
Why? Weight varies on earth, the moon, Jupiter, and your swimming pool! Mass is always the same.
Volume is a measure of the space matter occupies.
Matter takes up space.
Volume – the amount of space that matter in an object occupies
Air and other gases take up space and have volume
A bowling ball and a basketball have different masses, but about the same volume.
Determining Volume by Formula
You can calculate the volume of an object using a formula according to the shape: Rectangular box, sphere, cylinder, etc.
Rectangular box formula:
Volume = length x width x height
V = l x w x h or V = l•w•h or V = lwh
Volume of a cube:
V = length3 or
V = length x length x length
TSW describe the properties of matter.
Measuring Volume by Displacement
Used to measure mass of an irregular shape.
1. Add water to a graduated cylinder. Note the volume of the water by reading the water level on the cylinder.
2. Submerge the irregular object in the water. Note the new volume of the water with the object in it.
3. Subtract the two volumes to find the volume of the irregular shape.
Determine the volume of a liquid by measuring how much space it takes up in a container.
Volume is usually measured in liters (L) or milliliters(mL).
1L = 1,000 mL
1 mL = 1 cm3
There are formulas for normal shapes....
What about abnormal shapes?