עמוד:21

Activity Interactive Periodic Table The Periodic Table – Introduction to the Elements In this interactive periodic table you will be able to choose the names of the elements and receive information about them . You will also be able to sort the elements according to various criteria . Questions 1 . In the following table complete the chemical symbols of the elements appearing in it . 2 . Following are descriptions of some elements and a list of elements . Use the interactive periodic table and match each element name to its description . The descriptions A . Electronic chips are made from it . B . A component of emerald . C . The lowest density ( the “ lightest” ) element . D . The main component of air . E . A gas that emits red light in special light bulbs . F . A radioactive gas that accumulates in low places . G . The most common metal in the earth’s crust . H . A metal used for radiation protection when taking X-ray images . List of elements Beryllium Neon Aluminum Radon Nitrogen Hydrogen Silicon Lead 3 . Choose one of the elements that interest you . Read the information about it in the interactive table , and follow the links to further information and video clips about it . Choose one fact about the element that especially interested you , and present it to the class . Explain also why you chose this element . Electronic chip Emerald

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