English For Chemistry

  Group 7-The Halogens Please watch my video: https://youtu.be/Fx7bkOz9Uko Group 7 – the halogens The Group 7 elements are called the halogens. They are placed in the vertical column, second from the right, in the periodic table. Chlorine, bromine and iodine are the three common Group 7 elements. Group 7 elements form salts when they react with metals. The term ‘halogen’ means 'salt former'. Properties and uses of the halogens This table summarises some of the properties and uses of three halogens: Element Properties Typical use Chlorine Green gas Sterilising water Bromine Orange liquid Making pesticides and plastics Iodine Grey solid Sterilising wounds Iodine forms a purple vapour when it is warmed. Predicting properties The halogens show trends in physical properties as you go down the group. Melting point and boiling point The halogens have low melting poi...

LESSON PLAN School Name                : SMA ........... Subject                         : Chemistry Class / Semester           : X / Two Main Material               : Electrolyte and Non Electrolyte Solutions Time Allocation           : 1 x 3 JP A.     Core Competencies KI 1 :   Living and practicing the religious teachings it embraces . KI 2 :   Living and practicing honest, disciplined, responsible, caring (polite, cooperative, tolerant, peaceful) behavior, courteous, responsive and pro-active and showing attitudes as part of the solution to problems in interacting effectively with the social and natural e...