Description

How big is a Mole? Why is a mole of copper weigh more
than a mole of sulfur? Answer these questions while
introducing the concept of a mole and its importance
in chemistry with this demonstration. Bags containing
a mole of several elements and compounds are
available to examine, weigh, and explore. Use the mini
bags to demonstrate fractions of a mole, then bring
the bags out again to demonstrate the relationship
between moles and molar solutions. This is a great
teaching aid for introducing moles, Avogadro’s
number, gram molecular weight, and molarity.
Another idea with this kit is to set up lab stations
around the classroom with different amounts of each
substance in a plastic bag. Have students then identify
using a balance the weight in the bag and calculate the
number of moles of the element in the bag. 5 different
element samples are provided. Another kit, Molarity
and Concentration in the Bag Inquiry Demonstration
is similar in that it deals with molar solutions, dilutions
and the calculations involved.