Flashcards in Quiz on isotopes/ nuclear reactions Deck (13):
what is indicated from an atomic number?
-number of protons and electrons
what is indicated from a mass number?
number of protons and neutrons
what is atomic mass?
-weighted average mass of atoms naturally occurring that sample of the element
-reflects both mass and relative abundance of isotopes
-whole number = does not naturally occur in nature
-atoms that have the same number of protons but different number of neutrons
-have different mass numbers
what does each part of the following equation mean?
a= protons/neutrons or atomic mass
C= element name
determine the identity of an element (drivers license)
hold the nucleus together and influence mass
determine the chemical properties of an element (who you are)
what is contained in the nucleus
density level of nucleus of an atom?
VERY heavy. Holy MOLY
state the two kinds of isotopes and define them
stable: nucleus stays in tact
unstable: nucleus decays and emits radiation
define fission and fusion, also what they are responsible for
Fission: when the atom divides into smaller parts (fission is division) responsible for nuclear energy and bombs
Fusion: when 2+ atoms fuse together to become one, responsible for stars and new elements