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The Periodic Table and Elements

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Anna Seminuk

on 4 October 2012

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Transcript of The Periodic Table and Elements

Chapter 1: Section 3
Elements Introduction to the Periodic Table A metal is an element that is shiny and conducts heat and electricity well. Metals Types Of Elements! Copper: Naturally found in chalcopyrite and malachite The periodic table organizes elements into groups.
Groups/families: the vertical columns of the periodic table.
Periods: the horizontal rows of the periodic table. Metals are located on the left side of the periodic table.
Since they are good conductors, they have the property of malleability and are ductile because of its tensile strength.
Malleability- a substance can be hammered or rolled into thin sheets.
Ductile- Substances that can be drawn into a fine wire.
Most metals have a silver/white luster.
At room temperature, most metals are solids, not liquids. Pure copper melts at 1083 C
Boils at 2567 C Can be easily formed Remains unchanged in pure dry air at room tempurature Each square of the periodic table shows the element's symbol and atomic number. When heated, it reacts with oxygen E Essential to the human diet Noble Gases: Generally unreactive These are all the different types of elements classified.
They are put in to different groups based on their properties.
The different types of elements are metals, nonmetals, metalloids, and noble gases. Room temperature Metalloids Non-Metals an element that conducts heat and electricity poorly and that does not form positive ions in an electrolytic solution Most non-metals are gases at room temperature.
Examples: Nitrogen, Oxygen, Fluorine, and Chlorine.
A non-metal that is a liquid at room temperature in Bromine.
Solid non-metals include:
Carbon, selenium, sulfur, phosphorus, and iodine.
However, these solids are very brittle and have low conductivity.
Every non-metal is not a good conductor of heat or electricity. Elements that are similar to each other are close on the periodic table. The two main categories on the periodic table are metals and non metals. The metalloids are located where the blue section is. Metalloids are a type of element that has some characteristics of metals and some of non- metals. At room temperature they are solids, they are malleble, and they are semiconductors. One of many elements on the Periodic Table Phosphorus Phosphorus is a chemical element with the symbol P and the atomic number 15.
Phosphorus contains 15 protons/electrons and 16 neutrons.
Phosphorus is classified in the non-metal group of elements.
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