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PT RevQs

Periodic Table Review

Who Developed the periodic table fo the elements? Dmitri Mendeleev
how is the periodic table organized? By increasing atomic number
What name is given to a row in the periodic table? period
What name is given to a column in the periodic table? Family or group
What is true of all elements in the same family? they have the same number of electrons in their outer energy level (orbital)
What is true of all elements in the same period? they have the same number of energy levels (orbitals)
How many periods are there in the periodic table? 7
Why are there 2 rows separated from the rest of the table? to make it easier to fit on book pages/poster
Elements can be divided into what three classes? metals, non-metals, metalloids
Most of the elements belong to which class of elements, metals, non-metals, or metalloids? metals
As you move from left to right across a period the elements become ______ metallic. less
What does malleable mean? able to be flattened into a thin sheet
What does ductile mean? Able to be pulled into a thin wire
Which class of elements are dull, poor conductors, and not malleable? non-metals
Which class of elements shares some metal and some non-metal characteristics metalloids
When writing an element symbol, the first letter is always ________ _________ upper case
Pb is lead and Sn is tin. Why don't the symbols match the names for these elements? because their symbol is based on the Greek or Latin name for the element
In what general area are the non-metals found on the periodic table? the right side of the table
This family of elements all have one electron in thier outer level and contains the most reactive metals and alkali metals
This family of elelemts contains reactive metals with 2 electrons in thier outer level alkali earth metals
This family contains unreactive non-metals. They are all gases found in small quantities in the atmosphere noble gases
This family contains the most reactive non-metals, they all have 7 electrons in their outer level halogens
Created by: jtollefson