|Elements are arranged by atomic number.||There are 7 periods that are in rows on the periodic table.
There are 18 families that are in columns on the periodic table.
The families have common characteristics.
|is reactive because they only need one electron in the outer shell to be complete.
The elements are less reactive as you move down the family.
|not reactive at all.
The outer shell or energy level is complete.
|Metals||Most of the elements on the periodic table are _______.
________ are good conductors of heat and electricity.
________ have luster.
________ are malleable and ductile.
|Nonmetals||have opposite properties of metals.
They are brittle.
They are good insulators.
|Metalloids||have properties of metals and nonmetals.|
|Ionic bond||metal loses an electron to a nonmetal|
|Metallic bond||atoms of metals pool their electrons with other metals|
|Covalent bond||2 metals share electrons|
|Acids||can cause changes in metals.
#1- #6 on a pH scale.
|Bases||If something is too acidic and you want to bring it down to NEUTRAL, you would add this.
#8- #14 on a pH scale.
|Neutral||#7 on the pH scale|
|Elements on the periodic table||join to form compounds.|
|A molecule formula that starts with an H (Hydrogen)||is usually an acid.
(Examples: HCl, HBr, HI)