A map of North America with points labeled A and B. A: Center of Canada. B: In the ocean, South of Alaska.

Use the drop-down menu to identify which type of air mass would form at each point on the map.

Point A :

Point B:

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.