Human Anatomy and Physiology 2nd Edition Amerman

Human Anatomy and Physiology 2nd Edition Amerman Matter - ANS Anything that has mass and takes up space Chemistry - ANS The study of the properties of matter and its interactions atom - ANS the smallest unit of matter that still retains its original properties subatomic particles - ANS components of atoms protons - ANS positively charged subatomic particles which reside in the atomic neucleus neutrons - ANS subatomic particles with no charge which reside in the atomic neucleus electrons - ANS negatively charged subatomic particles which surround the atomic nucleus electron shells (energy levels) - ANS electrons occupy orbits or generally fixed regions of space around the nucleus periodic table of the elements - ANS A way of organizing the elements shows that certain properties repeat in a regular way, or periodically Major elements - ANS oxygen, carbon, hydrogen, nitrogen; make up 96% of the body's mass Mineral elements - ANS Sodium, Potassium, Calcium, Chloride, Magnesium; Make up less than 4% of the body's mass trace elements - ANS include iron, copper, iodine, zinc; found in extremely small amounts in the bodya mass number - ANS the number of neutrons plus the number of protons in the atom isotopes - ANS Atoms with the same atomic numbers but different mass numbers radioisotopes - ANS Isotopes that have unstable nuclei and undergo radioactive decay. mixture - ANS When atoms of two or more elements are physically intermixed molecule - ANS Two or more atoms combined by chemical bonds suspension - ANS a liquid mixed with a solid colloids - ANS a mixture composed of two distinct components, particles are small and not visible, particles do not settle out solution - ANS a solute dissolved in a solvent solute - ANS A substance that is dissolved in a solution.