The mass of the object
will be the sum of the three beams.

Read the triple beam
balance below.

What is the object's
mass?

The basic unit of measure for mass is the

To Find the Mass of
a Liquid:

Since
you cannot just pour the liquid directly on the pan of
the balance beam you need to put it in
a container.

For example:

Let's find the mass of
47.0 mL of water.

1. Pour
47.0 mL of water into a beaker.

2. Measure
the mass of the beaker with water.

3. Measure the mass of
the beaker without the water.

4. (SUBTRACT) The mass
of the water is the difference.

What is the mass of 47.0 mL?

To
Find the Volume of a Liquid

Scientists use a graduated
cylinder to measure the volume of something.

Remember volume is
the amount of space an object takes up.

Because the liquid
is curved, to read the volume correctly you must look at the
meniscus (the bottom of the curve).

Read the graduated
cylinder to the right.

What is the volume
of the liquid?

To find the volume of an Irregular
shaped solid:

1. Fill the graduated cylinder
to 50.0 mL.

2. Drop the object in on an angle.

3. Subtract 50.0 mL from the new
water level.

1.0 milliliter = 1.0 cubic centimeter

What is the volume of
the object?

To find the Volume
of Solid:

Use the
formula Length x Width X Height. It doesn't
matter what you consider your length, width, or height as long
as you don't measure the SAME SIDE TWICE.

Watch the Stanley the
Scientist iMovie to help you review the proper procedure for finding
the volume of a box.

To Measure
out grams of a substance.

1.Place the container
on th etriple-beam balance.

2. Add
the container's mass to the mass of the substance you need.

3. Set
the riders to the sum of the contaner and the amount you need

4. Pour
the substance in until the beam aligns with the 0 again.

For
example:

If the
mass of the empty container is 20.0 rams and you needed 35.0 grams
of sugar. You would set the riders on the triple beam balance to
55.0 grams.