Flashcards
Vocabulary Chapter 7 Lesson 2
Cards in this deck (7)
- 1ProtonsDef: the number of protons in an atom of an element.
- 2IsotopeDef: are the atoms of the same element that have different numbers of neutrons.
- 3Mass NumberDef: is the sum of the number of protons and neutrons in an atom.
- 4Average Atomic MassDef: is the average mass of the element´s isotope, wheighted according to the abundance of each isotope.
- 5RadioactiveDef: elements that spontaneously emit radiation
- 6Nuclear DecayDef: is a porcess that occurs when an unstable atomic nucleus changes into another more stable nucleus by emitting radiation
- 7IonDef: is an atom that is no longer neutral because it has gained or lost an electron.
