What is an Element? HOW MANY ELEMENTS CAN YOU LIST OR NAME?

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Presentation transcript:

What is an Element? HOW MANY ELEMENTS CAN YOU LIST OR NAME?

Elements  A pure substance that is made up of only one type of atom. one  Cannot be chemically or physically split into something simpler Each element has unique properties Characteristics “Personality” Behavior Palladium Bismuth Cobalt Phosphorus Co Pd Bi P

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More Make three inferences about the elements based on this graphic.

Exit Slip Answer the following on a slip of scrap paper and turn it in as you leave. 1. What is an element? (Be as thorough and specific as you can) 2. Give three examples.

Elements are represented by a symbol and a number Atomic Number: DNA for elements, there is only one element with each number. Can be used to identify element Symbols for elements have many different origins alchemy Latin English Towns People Movements Potassium – K “Kalium”, latin Iron – Fe “Ferrum” latin Atomic Number # of Protons Atomic Mass # protons + # neutrons = mass of nucleus

 First letter of each symbol is capitalized and second is not!!!  Fe – iron  Ca – calcium  Br – bromine  If you do it means something completely different  NI – Nitrogen Iodide  Ni – Nickel  CO – Carbon monoxide  Co - cobalt

Use your periodic table & notes to answer the following  The periodic table is placed in order according to element _______________.  What is the atomic number of oxygen?  What is the symbol for Krypton?  What is the atomic mass of Sodium?