3. one atom of silicon can properly be combined in a compound with a. one atom of chlorine. b. three atoms of hydrogen. c. two atoms of oxygen. d. four atoms of calcium.

Which feature indicates that mars resides in the inner region of the solar system

Why is metal often used for cooking pan?

Which explanation describes the forces involved for a person to walk down the sidewalk? a. the person's feet push backward on the sidewalk; the sidewalk pushes backward on the person. b. the person's feet push forward on the sidewalk; the sidewalk does not push on the person. c. the person's feet push backward on the sidewalk; the sidewalk pushes forward on the person. d. the person's feet push forward on the sidewalk; the sidewalk pushes forward on the person.