 Take article periodic table read and answer question in Isn  Homework: finish scavenger hunt paper. Start studying your voc and metals vs non metals.

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Presentation transcript:

 Take article periodic table read and answer question in Isn  Homework: finish scavenger hunt paper. Start studying your voc and metals vs non metals for Friday  Take article periodic table read and answer question in Isn  Homework: finish scavenger hunt paper. Start studying your voc and metals vs non metals for Friday

 Indicator 7-5.4: Use the periodic table to identify the basic organization of elements and groups of elements (including metals, nonmetals, and families). 

 A horizontal row on the periodic table is called a period.  Every periodic table will have a square for each element with the atomic number, atomic mass, element name, and the element symbol.  The elements on the periodic table are arranged numerically by atomic numbers.  Families, also called groups, are vertical columns of elements on the periodic table; they are usually numbered Elements in the same family have similar properties.

 A major classification of elements generally located on the left side of the zigzag line on the periodic table.  Examples of metals are: Sodium (Na), Calcium (Ca), Iron (Fe), and Aluminum (Al). The majority of elements are metals.

 A major classification of elements generally located on the right side of the zigzag line on the periodic table.  Examples of nonmetals are: Chlorine (Cl), Oxygen (O), Sulfur (S), and Iodine (I).

ElementSymbol SodiumNa ChlorineCl HydrogenH OxygenO CarbonC NitrogenN

 Elements are made up of one kind of atom and the symbol for each element is unique.  Compounds are composed of more than one element and their formulas have more than one type of symbol showing the different elements that compose the compound.

 In a chemical formula, the numbers as subscripts show how many of each kind of atom are in the compound.  The subscript is written to the lower right of the element symbol.  If no subscript is written, only one atom of that element is part of the compound. For example, in H 2 O, the number 2 is the subscript for hydrogen and means that there are 2 atoms of hydrogen in the compound of water; since there is no subscript for oxygen it is assumed to be one atom of oxygen.