Which is true about physical property? A. It is not associated with reactivity of a substance B. It alone determines how a substance reacts with other substance C. It is synonymous with a substance physical state D. None of the above
Which of the following is a compound? A. Water B.soduim C.chlorine D.Oxygen
which is true about neutrons and protons ? A. They are exactly equal to each other B. They are exactly equal to 1amu C. They have negligible mass D. They have masses slightly greater than 1amu
"Get 15% discount on your first 3 orders with us" Use the following coupon FIRST15