It is used to kill bacteria in drinking water and swimming pools.. 2. What are the Uses of the Halogens?. Made for AQA 2016 GCSE, but can be used with any exam board. Helium is much less dense than air (lighter) and used in filling weather balloons, airships and decorative balloons. Due to unreactive nature, low density and non-flammability of noble gases, they have a variety of uses listed below: Helium. The Periodic Table.

Therefore, halogen atoms are used to improve penetration through lipid membranes and tissues. In drug discovery, the incorporation of halogen atoms into a lead drug candidate results in analogues that are usually more lipophilic and less water-soluble. Chlorine is a disinfectant - it kills bacteria (see iodine below). )-Strengths and Weaknesses plenary all … Chlorine dissolved in sodium hydroxide solution is bleach. Halogens and Nobel Gases This is a lesson resource pack for the lesson of the new GCSE Chem spec about The Halogens and Nobel Gases. Noble gases aren’t easy to spot, because they’re both colorless and odorless, so where might you encounter them in the real world?. It follows that there is a tendency for some halogenated drugs to accumulate in adipose tissue. Contains:-Full Power-point lesson-Question booklets-Booklet mark scheme-a double bubble mind map template (thanks TES user, hanaprice! What are the Uses of Chlorine?.

The low density of helium is made use of in filling airships and balloons.

In fact, halogens are so reactive that they do not occur as free elements in nature. Noble gas is translated from the German noun Edelgas, first used in 1898 by Hugo Erdmann to indicate their extremely low level of reactivity. In the periodic table the halogens make up Group 17 (according to the numbering system adopted by the International Union of Pure and Applied Chemistry), the group immediately preceding the noble gases. If you’ve ever gotten a balloon from a birthday party, then you’re familiar with helium.This noble gas is lighter than air and is used to fill everything from birthday balloons to scientific balloons. The word halogen means "salt-producing," because halogens react with metals to produce many important salts. Real-Life Applications.

The name makes an analogy to the term "noble metals", which also have low reactivity.The noble gases have also been referred to as inert gases, but this label is deprecated as many noble gas compounds are now known. 1 of the Halogens is Chlorine which is used in swimming pools, and 1 of the Noble gases is Neon, which is used in Neon lights. The halogen atoms carry seven valence electrons in their outermost electron shell. It forms sodium chlorate(I) - NaOCl. The halogens have uses both as elements and compounds. History. Uses of Noble Gases. Many, however, are common in combination with other elements Here is a look at the identity of these elements, their location on the periodic table, and their common properties. 1.