Chapter 2 Section 1
Describe
the 2 properties of all matter
Identify
the units used to measure volume and mass
Compare Explain
inertia
mass and weight
the relationship between mass and
Anything
that has mass and takes up
space Examples:
a toaster, a neon sign, a steaming bowl of soup, YOU…
All
matter takes up space
Volume:
the amount of space taken up, or occupied, by an object
Cannot
share the same space at the same
time Let’s
try a ‘quick lab’…
A
can of soda = 355 milliliters (1/3 of a liter)
(L)
liters and (mL) milliliters are SI units used to measure volume of liquids
Meniscus:
the curve at a liquids surface (observed when using a graduated cylinder)
Cubic
units (3-D)
Cubic
meters (m³) or cubic centimeters (cm³)
Formula
for a rectangular object:
Volume = length x width x height
Displacement method
Utilize a graduated cylinder: the volume of water displaced by an object is equal to its volume
1mL = 1 cm³
Volumes of liquids can be expressed in cubic units, solids should be not be expressed in L or mL
Mass:
the amount of matter in an object
Weight:
the measure of gravitational force exerted on an object
The
more mass of an object, the greater the gravitational force, the greater the weight
Weight
depends on where an object is in the universe
Brick
vs. sponge
SI
Unit of mass = kilogram (kg); often expressed in grams (g) or milligrams (mg)
SI
Units of force = Newton (N)
The
tendency of an object to resist a change in its motion
An
object at rest will remain at rest unless acted upon by an outside force
Mass
is a measure of inertia
Explain
the difference between weight and
mass What How
units are used to express volume?
can you measure the volume of a rock?