Lab Equipment

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Lab Equipment
How to Measure Length
Length – Distance from one point to
another.
 Units = Meters (Km, cm, etc.)
 Equipment – Ruler, Meter Stick

How to Measure Mass
Mass – Amount of matter in an object
 Units = Grams (Kg, mg, etc.)
 Equipment - Triple beam balance

Mass vs. Weight

Weight
 Measure
of gravity's effect on
something
 Weight = mass x gravitational
acceleration
 Measure with a scale.

Mass
 The
amount of matter in an object
 Can measure with balance weights
because the balance weights
change by the same factor as the
object you are measuring
Mass vs. Weight
•
Move to a different planet and an object's
weight will change, but its mass will be the
same.
Volume - How much space an object
occupies
Methods to Measure Volume:
1.
If liquid, use a graduated cylinder
2. If regular shaped solid, use math formula:
L x W x H = Volume
Methods to Measure Volume:
3.
If irregular solid, use
water displacement
method
Subtract the
two volumes!
Units of Volume

If liquid, use Liters (L)
 Equipment:

Graduated Cylinder, Beaker
If solid, use meters3 or cm3
 To
the third power because L x W x H, which
is cm x cm x cm = cm3
Which is the Most Precise?
Which of the groups measured the
volume with the highest precision?
Reading Volume

Read from the bottom of the meniscus!
Which of the following pieces of equipment
would be most appropriate for measuring
the volume of a marble?
How to Measure Temperature
Thermometer
 Temperature – The degree of hotness or
coldness of an object.
 Units – °C or Celsius
 Other:
Water boils at 100°C
Water freezes at 0°C
