+ The Periodic Table I can use the periodic table to predict the properties of elements based on the patterns of their valence electrons.

+ The Periodic Table- Cracking the Code The Periodic Law- __________ and __________ properties repeat in a predictable way, when elements are arranged in order of increasing ___________ ______________. physical property- a characteristic of matter than can be ______________or measured without changing the sample’s composition. (density, color, melting point) chemical property- the ability or inability of a substance to _______________with or change into one or more new substances (reaction with water)

+ The Periodic Table- Cracking the Code Each horizontal row is called a __________. Elements in the same period have their valence electrons in the same energy level Ex: Na, Mg, P, Ar have their valence electrons in the ____________ principal energy level

+ The Periodic Table- Cracking the Code Elements in the same column are called __________ or families, numbered Elements in the same group have the same number of___________ __________, (in red)

+ The Periodic Table- Cracking the Code Elements are divided by a “____________” line into metals, non-metals and metalloids Elements to the ________ of the “stair step” line are ____________ Can be _________ (brittle/powdery), _________ or ___________ _________ conductors of electricity Elements to the _______ of the line are _________, except for ______________, which is a non-metal Usually _________- Mercury (Hg) is the exception, which is a __________ at room temperature _________(shiny), _________ (bendable) __________ conductor of electricity

+ The Periodic Table- Cracking the Code Elements that _______ the line are called ________________. Share properties with _______ metals and non-metals ___________ is a common metalloid, used in ___________ ______

+ The Periodic Table- Cracking the Code The Periodic Table can be split into regions that show the _________ that contain the elements’ highest energy valence electrons. s block- group ___ and ____ All elements in this block have their valence electrons in an s sublevel Li has 1 valence electron in the 2s sublevel, Be has 2 electrons in the 2s sublevel p block- groups ____-_____ All elements in this block have an either partially or fully filled p sublevel. Group 18 elements, the ________ ________are unique because they have completely filled s and p sublevels. This makes them very stable. d block- groups ________(transition metals) f block- lanthanides and actinides

+ The Periodic Table- Cracking the Code Elements that have the same number of ________ _________tend to ______ in the same way. Group I: ________ __________(excluding hydrogen) ____ valence electron in___ sublevel Very reactive with ______ and _____ Combine easily with __________ to make _______ Group 2:____________ _________ ____________ ___ valence electrons in ____ sublevel Reactive with air and water

+ The Periodic Table- Cracking the Code Group 3- Group 12: _________________ _________________ Number of valence electrons varies React with many elements to make______________ _________ Group 17: _________________ _____ valence electrons Highly reactive with alkali metals and alkaline earth metals to produce_______ Group 18: _________ ____________ _____ valence electrons __________________