The chemical properties of calcium are most similar to the chemical properties of
(1) ar (3) mg
(2) k (4) sc

If a || b and e || f, what is the value of y ?

When an object falls through the air and encounters air resistance its overall speed will be than if it had not encountered air resistance? (one word answer)

Water's surface tension and heat storage capacity are accounted for by its a) orbitals b) weight c) hydrogen bonds d) mass e) size