Predict rates of evaporation are higher than rates of condensation over a warm body of water. Would you expect the relative humidity of the air over the water to be high or low? Explain your answer. Note: I know I already asked this but I forgot to add the last part so it made it confusing. Sorry about that!

1) according to the law of conservation of mass ,in all chemical reactions total mass is unchanged

The answer will be c

They both go downwards and the can break apart rocks 

So the main goal for the elements is stability which is a complete/full valence shell and typically the magic number for a stable element is 8 valence electron but not always. so elements to the left of the periodic table tend to be way less stable then those on the right, so the elements on the left are much more reactive.