5 Written Questions
5 Matching Questions
- subatomic particles
- trace elements
- mass number
- Calcium, Phosphorous, Sulfur, Potassium, Sodium, Chlorine, Magnesium, and Iron
- a The elements that make up the last .4% of the mass of the body.
- b The dozens of particles that compose atoms, namely protons, neutrons, and electrons.
- c The eight lesser elements in the human body.
- d The sum of an atom's protons and neutrons.
- e A substance that contains atoms of two or more different elements.
5 Multiple Choice Questions
- The number of protons in an atom.
- 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).
- The standardized unit of measurement for the mass of atoms and their subatomic particles.
- Negatively charged particles located in a cloud, moving about the nucleus of an atom.
- Two or more atoms sharing electrons.
5 True/False Questions
tracers → Radioisotopes used to follow movements of certain substances through the body.
lesser elements → The elements that make up the last .4% of the mass of the body.
ion → The amount of matter in any object; never changes.
isotopes → Atoms of an element that have different numbers of neutrons and therefore different mass numbers; most of them are stable and do not change over time.
matter → The amount of matter in any object; never changes.