|Before you can understand density you need to know about mass and volume.
|The electronic balance
will be used also.
|Mass in measured in
grams or Kilograms!
|Simply put, Volume is the space that matter takes up. There are two easy ways to measure the
volume of a solid.
O.K. I know that math is not considered easy by some of
you, but if you use a calculator and the proper formula it's a
pretty simple way to get the answer.
In this class we will only be using one formula, the formula
for finding the volume of a rectangular solid.
Volume = Length x Width x Height
Because you are multiplying cm x cm x cm the label for
your numbers will be in cubic centimeters or cm
|Way #2 - Displacement
We have already see that we can measure the volume of a liquid using a
graduated cylinder. We can also measure the volume of a solid that way
Displacement means to push out of the way. We see displacement when we
get into a bathtub. The water level rises by the volume of the 'us' that we put
in the water
|If we put a solid object into a liquid,
the solid will displace it's volume of
beginning from the ending amount
of liquid we have the volume of the
|Nothing could be easier than measuring the volume of a liquid. You pour it
into a graduated cylinder and your done!!
There is one small catch though, the liquid may look like it is 'curving', if you
notice this you just look for the bottom of the curve (called the meniscus)