SME
Grade 8 Science
The periodic table
The main lesson, then each kind of problem it solves.
The periodic table
Main lesson
Reading an element’s group and period
Use this for “In which group and period is element 17?”
Protons, neutrons and electrons from the card
Use this for “An atom has 8 protons and a mass number of 16. How many neutrons does it have?”
Metal, nonmetal or metalloid?
Use this for “Which of these elements is a nonmetal?”
Which group does it belong with?
Use this for “Which element reacts most like sodium?”