5 Written questions
5 Matching questions
- free radical
- atomic number
- atomic mass (atomic weight)
- a The amount of matter in any object; never changes.
- b An atom or group of atoms with an unpaired electron in the outermost shell; makes the atom unstable, highly reactive, and destructive to nearby molecules.
- c The number of protons in an atom.
- d The process of giving up or gaining electrons.
- e The average mass of all of an atom's naturally occurring isotopes.
5 Multiple choice questions
- Radioisotopes used to follow movements of certain substances through the body.
- The standardized unit of measurement for the mass of atoms and their subatomic particles.
- The sum of an atom's protons and neutrons.
- One or two letters of an element's name in English, Latin, or another language (ex. H for Hydrogen, Ne for Neon, or K for Potassium).
- Positively charged particles located within the nucleus of an atom.
5 True/False questions
Calcium, Phosphorous, Sulfur, Potassium, Sodium, Chlorine, Magnesium, and Iron → The four major elements in the human body.
neutrons (n⁰) → Uncharged (neutral) particles located within the nucleus of an atom.
compound → A substance that contains atoms of two or more different elements.
lesser elements → Calcium, Phosphorous, Potassium, Sulfur, Sodium, Chlorine, Magnesium, and Iron; make up about 3.6% of the body's mass.
chemical elements → The elements that make up the last .4% of the mass of the body.