Determining the Size and Purity of a Molecule Sample
Learners conduct a lab that compares the weights of two different molecules. They determine molecular mass according to molecular formula, count the number of substances present in a sample and write a lab paper about the experiment.
9th - 12th Science 3 Views 0 Downloads
The Influence of Initiator Concentration on the Molecular Weight of Polystyrene
This in-depth organic chemistry lab walks learners through an investigation of the effect of initiator concentration on the resulting molecular weight of polystyrene. It is important that you use this lesson with experienced chemistry...
11th - Higher Ed Science
Stuff We Did Last Semester. . . You Must Remember for this Semester. . .
Don't let the title throw you. It could easily be changed to "Density and Mole Calculations," or "Naming Molecular Compounds." The content is appropriate to any general chemistry course, and learners will benefit from the practice of...
9th - 12th Science
New Review Relative and Atomic Molecular Mass
Relative molecular masses sure have a lot of decimal places! Watch the video to learn how the number of particles in one mole of carbon-12 determines relative atomic and molecular masses. Viewers also learn how to calculate the atomic...
6 mins 9th - Higher Ed Science
The Law of Conservation of Mass
This short video simply explains the Conservation of Mass with graphics that show the atoms being conserved in pictures of balanced equations. The connection between mass and energy is explained and Einstein's energy equation is mentioned.
5 mins 7th - 12th Science CCSS: Adaptable