We breezed through Lesson 37 with a demonstration connecting molecular formula and shape. Students learned:
- noble gases (single atoms) are visualized as points
- molecules consisting of two atoms (i.e. hydrogen fluoride) are linear
- molecules consisting of three atoms can be bent (H2O) or linear (CO2)
- molecules consisting of four atoms, like ammonia (NH3) are called pyramidal
- molecules consisting of five atoms, like methane (CH4) are called tetrahedral
For homework, students were assigned Lesson 37 textbook problems 5-9 on page 195.
We spent the remainder of the class period delving into the science required to successfully answer the question: Is water wet?