5 Written questions
5 Matching questions
- Calcium, Phosphorous, Sulfur, Potassium, Sodium, Chlorine, Magnesium, and Iron
- electron shells
- trace elements
- a Anything that occupies space and has mass.
- b The eight lesser elements in the human body.
- c Substances that inactivate oxygen-derived free radicals.
- d The regions outside the nucleus that electrons move about in; depicted as simple circles around the nucleus; each region holds a specific number of electrons (2.8.18).
- e The elements that make up the last .4% of the mass of the body.
5 Multiple choice questions
- Positively charged particles located within the nucleus of an atom.
- The dozens of particles that compose atoms, namely protons, neutrons, and electrons.
- The science of the structure and interactions of matter.
- Calcium, Phosphorous, Potassium, Sulfur, Sodium, Chlorine, Magnesium, and Iron; make up about 3.6% of the body's mass.
- The time required for half of the radioactive atoms in a sample of an isotope to decay into a more stable form.
5 True/False questions
atomic number → The sum of an atom's protons and neutrons.
ion → The smallest units of matter that retain the properties and characteristics of the elements.
atomic mass (atomic weight) → The number of protons in an atom.
Carbon, Hydrogen, Oxygen, and Nitrogen → The four major elements in the human body.
tracers → Radioisotopes used to follow movements of certain substances through the body.