+
Related Flashcards
Cards In This Set
| Front | Back |
|
The simpliest form of matter to have unique chemical properties
|
Element
|
|
Despite there minute quantities these elements play vital roles in physiology
|
Trace elements
|
|
Inorganic elements that are extractedfrom the soil by plants and passed up the food chain to humans and other organisms. Consist of 4% of the bodies weight
|
Minerals
|
|
A single positive charge
|
Protons
|
|
Have no charge
|
Neutrons
|
|
Tiny particles with a single negative charge and very low mass
|
Electrons
|
|
The elctrons on the outermost shell that determine the chimical bonding properites of an atom
|
Valence electrons
|
|
Unstable isotopes
|
Radioisotopes
|
|
Process of decay of an isotope
|
Radioactivity
|
|
Jogj-energy radiation ejecting electrons from atoms, converting atoms to ions. it destroys molecules and produced dangerous free radicals and ions inhuman tissues.
|
Ionizing radiation
|
|
Causing mutations in DNA
|
Mutagenic
|
|
Triggering cancer as a result of mutation
|
Carcinogenic
|
|
The time required from 50% of a radioisotope to decay to a more stable state
|
Physical halflife
|
|
Is the time required for half of it to disappear from the body
|
Biological half-life
|
|
Charged particles with unequal numbers of protons and electrons
|
Ions
|
