This is the beginning of my Kinetic Molecular Theory
unit.
I start by providing the students with
their study guide and copies of the powerpoint slides for the unit.
At the title slide, I ask students if
they know what kinetic means.
We discuss that it means movement and therefore this theory is
about the movement of molecules.
I then attempt to engage their interest by showing a short video
that starts with dirigibles, demonstrates hydrogen as lighter than air but flammable, carbon dioxide
as heavier then air and nonflammable and then helium as lighter than air and nonflammable.
For the explore portion, we discuss the five assumptions that describe an ideal gas.
For
assumption one that gases consist of large numbers of tiny particles relative to their size, I give
every students a ball pit ball.
I tell the students that each ball is a particle of gas; then I tell them to
hold their particles in the air.
I ask the students to look around and decide if the particles are close
together or far apart and to decide if there are a few or many.
When they conclude there are many
and they are far apart, we move on.