Lesson 2.2: Bohr-Rutherford Diagrams

Learning Goals:

By the end of this lesson, I will be able to:

• draw Bohr - Rutherford diagrams for the first 20 elements.

• define and explain valence electrons

*The learning goals descriptions are taken and reworded/simplified from Ontario Curriculum booklet. Codes inside the brackets refer to the sections of Ontario Curriculum for Science Course.

Success Criteria:

1. I can draw Bohr - Rutherford diagrams for the first 20 elements of the periodic table.

2. I can define isotopes and radioisotopes.

3. I can calculate the average atomic mass of elements from their isotopes and relative abundance.

4. I can explain the formation of positive and negative ions from stable atoms

Time: 2 Hours