CHEMICALS IN LIVING THINGS
ELEMENTS IN THE HUMAN BODY
ELEMENTS IN THE HUMAN BODY
- The most abundant elements in the human body are Oxygen (O2), Carbon (C), Hydrogen (H), Nitrogen (N), Calcium (Ca), & Phosphorus (P).
THE IMPORTANCE OF WATER
- Water is a polar molecule held together by covalent bonds.
- The different ends of water attract different substances and make water sticky.
- Water molecules are cohesive and adhesive because of hydrogen bonding.
- Important properties of water are capillary action, surface tension, high heat capacity & increased density as a solid.