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The elements
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LEARNING GOALS We are learning to identify and classify elements on the periodic table. We are learning to identify elements by their names or symbols.
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Elements and their symbols
90 naturally occur on earth 25 new ones made by chemists divided into metals, non-metals and metalloids based on properties
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metals majority of elements
most are shiny and silver or grey in colour excellent conductors of electricity and heat malleable and ductile Ag, Na, Pd, Hg
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Non-metals only 17 elements
grouped together mainly because don’t resemble metals. 11 of the non-metals are gases at room temperature 5 are solids 1, bromine, is a red-brown liquid
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metalloids metallic and non-metallic properties.
don’t conduct electricity very well – semiconductors. easier to control the flow of electricity through semiconductors electronic devices Silicon most common
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Element symbols consists of one or two letters.
first letter is always capitalized. if there is a second letter, it is not capitalized. Co vs CO
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LEARNING GOALS We are learning to identify and classify elements on the periodic table. We are learning to identify elements by their names or symbols.
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Please complete Textbook 6.1 #1, 3, 4, 5, 8.
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