Words of Wisdom:

"I HavE YoUR BoOk!!!!!" - Suvi2

The Periodic Table

  • Date Submitted: 09/19/2010 04:39 AM
  • Flesch-Kincaid Score: 57.8 
  • Words: 328
  • Essay Grade: no grades
  • Report this Essay
The Periodic Table

|Characteristic                               |Pattern down a group                                 |Pattern across a period                           |
|Atomic number and mass number                 |Increases                                             |Increases                                         |
|Atomic radius                                 |Increases                                             |Decreases                                         |
|Melting points                               |Deceases for groups I to V and increases from groups |Gently increases then decreases                   |
|                                             |V to VIII                                             |                                                   |
|Reactivity                                   |Metals become more reactive and non-metals become     |Is high, then decreases and then increases. Group |
|                                             |less reactive                                         |VIII elements are inert and do not react.         |
|Metallic character                           |Increases                                             |Decreases                                         |

The period table contains eight groups of elements; some have been given special, unique names.

    • Group I elements are known as the alkali metals. The alkali metals all react strongly with water to form basic solutions.

    • Group II elements are referred to as the alkaline Earth Metals.

    • Group VII elements are known as the halogens. The halogens are brightly coloured elements. Chlorine is green, bromine is red-brown and iodine is silvery-purple.

    • Group VIII elements are known as the noble gases. The noble gases are inert and do not readily react with other substances.

    • The block of elements in the middle of the table is known as the transition metal blocks.

The line that zigzags through the...

Comments

Express your owns thoughts and ideas on this essay by writing a grade and/or critique.

  1. No comments