Lab Equipment
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Transcript Lab Equipment
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