Intro to Chem .

isotope, atomic mass, atomic number, periodicity, periods, alkalai metals, alkaline earth metals, halogens, noble gases, ions, chemical reaction, reactants, products, reaction rate, kinetic theory

Inside Nucleus

Neutrons ( Neutral ) & Protons ( Positive ) .

Around Nucleus

Electrons ( Negative )

Periodic Table

is full of

Atoms

& have

protons

atomic number

atomic mass

neutrons

atomic mass

electrons

nucleus

Periods & groups .

groups into

metals

alkali metals

r

Alkali metals are soft , highly reactive , have one valance electron , low melting points , & have positive valance .

alkaline earth metals

r

Alkaline earth metals have two valance electrons , have positive valance ,

nonmetals

halogens

noble gases