https://padlet.com/3014181/37rtdi0yybpo en-us 2017-04-25 15:34:28 UTC 2025-11-25 20:50:01 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Lightdecrease.png 3014181 https://padlet.com/3014181/37rtdi0yybpo/wish/168145831 Oxygen is the third most abundant element found in the sun, and it plays a part in the carbon-nitrogen cycle, one process responsible for stellar energy production. ]]> 2017-04-25 15:40:34 UTC https://padlet.com/3014181/37rtdi0yybpo/wish/168145831 3014181 https://padlet.com/3014181/37rtdi0yybpo/wish/168148858 Phosphorous is an essential component of living systems and is found in nervous tissue, bones and cell protoplasm. ]]> 2017-04-25 15:49:00 UTC https://padlet.com/3014181/37rtdi0yybpo/wish/168148858 3014181 https://padlet.com/3014181/37rtdi0yybpo/wish/168150020 Potassium is an essential constituent for plant growth and it is found in most soils. It is also a vital element in the human diet.]]> 2017-04-25 15:52:27 UTC https://padlet.com/3014181/37rtdi0yybpo/wish/168150020 3014181 https://padlet.com/3014181/37rtdi0yybpo/wish/168150786 Silicon is present in the sun and stars and is a principal component of a class of meteorites known as aerolites. ]]> 2017-04-25 15:54:49 UTC https://padlet.com/3014181/37rtdi0yybpo/wish/168150786 3014181 https://padlet.com/3014181/37rtdi0yybpo/wish/168152166 Pure silver has the highest electrical and thermal conductivity of all metals, and possesses the lowest contact resistance. ]]> 2017-04-25 15:59:11 UTC https://padlet.com/3014181/37rtdi0yybpo/wish/168152166 3014181 https://padlet.com/3014181/37rtdi0yybpo/wish/168153596 Group 1 elements are often referred to as the "alkali metals". The chemistry of sodium is dominated by the +1 ion Na⁺.]]> 2017-04-25 16:04:09 UTC https://padlet.com/3014181/37rtdi0yybpo/wish/168153596 3014181 https://padlet.com/3014181/37rtdi0yybpo/wish/168684943 Sulphur (sulfur) is a pale yellow, odourless, brittle solid, which is insoluble in water but soluble in carbon disulphide. Sulphur is essential to life.]]> 2017-04-27 16:18:51 UTC https://padlet.com/3014181/37rtdi0yybpo/wish/168684943 3014181 https://padlet.com/3014181/37rtdi0yybpo/wish/168687920 Ordinary tin is a silvery-white metal, is malleable, somewhat ductile, and has a highly crystalline structure.]]> 2017-04-27 16:27:37 UTC https://padlet.com/3014181/37rtdi0yybpo/wish/168687920 3014181 https://padlet.com/3014181/37rtdi0yybpo/wish/168689955 Uranium is of great interest because of its application to nuclear power and nuclear weapons.]]> 2017-04-27 16:34:04 UTC https://padlet.com/3014181/37rtdi0yybpo/wish/168689955 3014181 https://padlet.com/3014181/37rtdi0yybpo/wish/168690120 Zinc-deficient animals require 50% more food to gain the same weight of an animal supplied with adequate amounts of zinc.]]> 2017-04-27 16:34:43 UTC https://padlet.com/3014181/37rtdi0yybpo/wish/168690120 3014181 https://padlet.com/3014181/37rtdi0yybpo/wish/168690242 Note that while hydrogen is normally shown at the top of the Group 1 elements in the periodic table, the term "alkaline metal" refers to the Group 1 elements from lithium downwards and not hydrogen.]]> 2017-04-27 16:35:11 UTC https://padlet.com/3014181/37rtdi0yybpo/wish/168690242 3014181 https://padlet.com/3014181/37rtdi0yybpo/wish/168694630 Iodine is a bluish-black, lustrous solid. It volatilises at ambient temperatures into a pretty blue-violet gas with an irritating odour.]]> 2017-04-27 16:49:16 UTC https://padlet.com/3014181/37rtdi0yybpo/wish/168694630 3014181 https://padlet.com/3014181/37rtdi0yybpo/wish/168695447 Iron is a relatively abundant element in the universe. It is found in the sun and many types of stars in considerable quantity.]]> 2017-04-27 16:52:14 UTC https://padlet.com/3014181/37rtdi0yybpo/wish/168695447 3014181 https://padlet.com/3014181/37rtdi0yybpo/wish/168696396 Lead is a bluish-white lustrous metal. It is very soft, highly malleable, ductile, and a relatively poor conductor of electricity.]]> 2017-04-27 16:55:49 UTC https://padlet.com/3014181/37rtdi0yybpo/wish/168696396 3014181 https://padlet.com/3014181/37rtdi0yybpo/wish/168697064  Group 1 elements are called "alkali metals". Lithium is a solid only about half as dense as water and lithium metal is the least dense metal.]]> 2017-04-27 16:58:00 UTC https://padlet.com/3014181/37rtdi0yybpo/wish/168697064 3014181 https://padlet.com/3014181/37rtdi0yybpo/wish/168698142 Magnesium is a grayish-white, fairly tough metal. Magnesium is the eighth most abundant element in the earth's crust although not found in it's elemental form.]]> 2017-04-27 17:01:31 UTC https://padlet.com/3014181/37rtdi0yybpo/wish/168698142 3014181 https://padlet.com/3014181/37rtdi0yybpo/wish/168797863 Mercury is the only common metal liquid at ordinary temperatures. Mercury is sometimes called quicksilver.]]> 2017-04-28 04:42:44 UTC https://padlet.com/3014181/37rtdi0yybpo/wish/168797863 3014181 https://padlet.com/3014181/37rtdi0yybpo/wish/168798533 Neon is a very inert element. Neon forms an unstable hydrate. In a vacuum discharge tube, neon glows reddish orange. ]]> 2017-04-28 04:54:27 UTC https://padlet.com/3014181/37rtdi0yybpo/wish/168798533 3014181 https://padlet.com/3014181/37rtdi0yybpo/wish/168798633 Nickel is found as a constituent in most meteorites and often serves as one of the criteria for distinguishing a meteorite from other minerals.]]> 2017-04-28 04:56:26 UTC https://padlet.com/3014181/37rtdi0yybpo/wish/168798633 3014181 https://padlet.com/3014181/37rtdi0yybpo/wish/168799215 Nitrogen is a Group 15 element. Nitrogen makes up about 78% of the atmosphere by volume but the atmosphere of Mars contains less than 3% nitrogen.]]> 2017-04-28 05:05:43 UTC https://padlet.com/3014181/37rtdi0yybpo/wish/168799215