MEASURING SOLIDS Flashcards
is perhaps one of the
most fundamental concepts in science.
Measurement
It is a technique in which the properties
of an object are determined by comparing them to a standard.
Measurement
A highly precise
laboratory balance for
measuring mass
Analytical Balance
Used for exact
weighing applications
of small amounts of
material
Analytical Balance
Designed with an
enclosed measuring
pan
Analytical Balance
Chemicals are never _____ on the
weighing pan.
placed directly
A _____ is used under the chemical.
weighing boat, paper, or
bottle
When weighing material that can stain
(e.g., potassium permanganate), remember to
place a piece of _____ under the weighing pan
and push a large piece of paper up to the
balance to catch any material that falls off the
balance.
paper
Do not exceed the ____ of the balance.
maximum weight
limit
____the load on the pan as much
as possible.
CENTER
All objects or samples to be weighed
must be in _____ with the
room before a weighing can be
attempted.
thermal equilibrium
Never handle the item to be
weighed directly with your _____.
fingers
Immediately _____ any chemical spillage
on the pan, within the weighing
chamber, or in the work area surrounding
the balance.
clean
Always record
weighing to the
nearest
0.0001 g
Leave the sliding glass
doors ____, the
balance covered and
the area around it
clean.
closed
