Briefly explain why sulfur and phosphorous can form complicated molecules, but nonmetals in period 2 tend to form only diatomic molecules.

How does decreasing the gas volume affect the pressure of a gas?

When the earth was formed and cooled, why did nickel and iron end up in the center of the earth while basalt and granite ended up in the outer layers

Put these processes of the water cycle in the correct order, starting at the point where the water is in the lake: 1. water evaporates into the atmosphere 2. rain, snow, or other precipitation falls 3. water collects into larger bodies of water 4. water vapor condenses into liquid water