Environmental Chemistry
11/4/2013
Standard:
CH1.d. Students know how to use the periodic table to determine the number of electrons
available for bonding.
CH2. a. Students know atoms combine to form molecules by sharing electrons to form covalent bonds
CH2.b. Students know chemical bonds between atoms in molecules such as H2, CH4, NH3, H2, CCH2, N2,
CL 2 and many large biological molecules are covalent.
CH2.e. Students know how to draw Lewis dot structures.
Objective: SWBA to build covalent bonds by using Lewis dot structures and by using the VSEPR theory
predict the shapes of molecules with 80% or more accuracy.
Activities: 1. Warm-up
2. YouTube video: Molecular Geometry
3. DII strategy: Covalent bonding and Molecular shapes
4. Assessment-KAGAN Strategy- Numbered heads
Warm-up:
Which statement best describes the density of an atom’s nucleus?
A.
B.
C.
D.
The nucleus occupies most of the atom’s volume but contains little of its mass.
The nucleus occupies very little of the atom’s volume and contains little of its mass.
The nucleus occupies most of the atom’s volume and contains most of its mass.
The nucleus occupies very little of the atom’s volume but contains most of its mass.