Water in the ocean is heated by the sun and BLANK into the air and as it cools it BLANK
back into liquid form before falling as rain.

Can someone me with these questions plz.

If a solution is considered basic, then a) the hydroxide ion and hydronium ion concentrations are equal. b) the hydroxide ion concentration is less than the hydronium ion concentration. c) the hydronium ion concentration is greater than the hydroxide ion concentration. d) the hydroxide ion concentration is greater than the hydronium ion concentration.

What are the similarities of physical and chemical change ?