Now that we've figured out how phase changes play a role in smelling things from a distance, we're seeing how understanding the particulate nature of matter is important in some real-world situations. Here are the scenarios that students had to analyze...who knew we'd see (and smell) science everywhere!?!?! (wink, wink!)
Now that we figured out all the different ways odors can be different from one another, we're figuring out how an odor can change so we can smell it!
Using ammonia (NH3) and indicator paper at different temperatures, we're seeing how evaporating rates can affect how many molecules enter the air and eventually our noses. It's not necessarily the strength of the scent, but rather how many of the scent molecules are in the air due to heat energy!
So we have figured out some pretty important things about atoms and molecules. We're building models of them to drive home some ideas! And we're starting to really see how odors can be different from one another at the molecular level.
Students were also challenged to draw two molecules that could prove a point: that two different substances can smell different and be made of the SAME atoms!