atomic structure
the atomic number is the number of ______ in an element
protons
what element is Bi
Bismuth
define: ionic bond
bond formed between 2 ions by the transfer of electrons
Define: radiation
penetrating rays and particles emitted by a radioactive source
Define: Mole
a counting unit
What is an isotope?
same elements have same number of protons and different number of neutrons.
Define: Ionization energy
amount of energy needed to lose a valence e-
cation is a ______ charged ion while an anion is a _____ charged ion
positively; negatively
what is the difference between fusion and fision
Fission splits when fusion merges
What is the Mole formula
6.02x1023
who had the gold foil experiment?
Ernest Rutherford
Name all the group names
Alkali metals, alkaline metals, halogens, noble gases
Define: Polyatomic ion
ion formed from 2 or more covalently bonded elements
elements over ___ are radioactive (number)
85
What is the difference between empirical and molecular formulas
empirical is the simplest form and molecular is not simplest
atoms cannot be ______ or _______
created,, destroyed
what is the element Hf
hafnium
The three types of chemical bonds:
Ionic, covalent, and metallic
Define: Transmutation
conversion of an atom of 1 element to an atom of another element
Is this empirical or molecular? CH2O
empirical
Define: ground state
the most stable lowest energy arrangement of electrons in atoms of each element
Define: atomic radius
the distance from the nucleus to the valence e
Name this: SrF2
strontium flouride
what is this called (picture)
cooling tower
Define: Stoichiometry
the study of the quantitive aspects of chemical reactions