tag:blogger.com,1999:blog-5690887427829940237.post7304316752323323391..comments2024-01-16T00:26:39.356-08:00Comments on IGCSE Chemistry: 2.6 describe the reactions of these elements with water and understand that the reactions provide a basis for their recognition as a family of elementsHannahHelphttp://www.blogger.com/profile/03691395988069139300noreply@blogger.comBlogger5125tag:blogger.com,1999:blog-5690887427829940237.post-88516907755789862282017-05-26T18:53:43.522-07:002017-05-26T18:53:43.522-07:00thank you!! extremely useful. i remember learning ...thank you!! extremely useful. i remember learning this in class! :)Anonymoushttps://www.blogger.com/profile/18145933082140301154noreply@blogger.comtag:blogger.com,1999:blog-5690887427829940237.post-90367287514604489002016-05-22T07:06:25.385-07:002016-05-22T07:06:25.385-07:00Lithium
When lithium is added to water, it floats....Lithium<br />When lithium is added to water, it floats. It fizzes steadily and becomes smaller, until it eventually disappears.<br />lithium + water → lithium hydroxide + hydrogen<br />2Li(s) + 2H2O(l) → 2LiOH(aq) + H2(g)<br /><br />Sodium<br />When sodium is added to water, it melts to form a ball that moves around on the surface. It fizzes rapidly, and the hydrogen produced may burn with an orange flame before the sodium disappears.<br />sodium + water → sodium hydroxide + hydrogen<br />2Na(s) + 2H2O(l) → 2NaOH(aq) + H2(g)<br /><br />Potassium<br />When potassium is added to water, the metal melts and floats. It moves around very quickly on the surface of the water. The hydrogen ignites instantly. The metal is also set on fire, with sparks and a lilac flame. There is sometimes a small explosion at the end of the reaction.<br />potassium + water → potassium hydroxide + hydrogen<br />2K(s) + 2H2O(l) → 2KOH(aq) + H2(g)<br />Anonymoushttps://www.blogger.com/profile/08236734563911083106noreply@blogger.comtag:blogger.com,1999:blog-5690887427829940237.post-32986102793444282962016-05-17T12:05:23.632-07:002016-05-17T12:05:23.632-07:00same here. you dont really say too much, but thank...same here. you dont really say too much, but thanks anywayAnonymoushttps://www.blogger.com/profile/00931379460898496747noreply@blogger.comtag:blogger.com,1999:blog-5690887427829940237.post-78436662109275237322015-05-30T18:06:59.043-07:002015-05-30T18:06:59.043-07:00i agree
i agree<br />Anonymoushttps://www.blogger.com/profile/02546361268560228409noreply@blogger.comtag:blogger.com,1999:blog-5690887427829940237.post-49513742581615079632014-06-22T14:57:06.901-07:002014-06-22T14:57:06.901-07:00Thanks for the info, just saying though that you s...Thanks for the info, just saying though that you should probably describe the reactions (e.g. fizzes, floats, moves around, melts into a ball if it's sodium or potassium and gradually disappears): http://www.chemguide.co.uk/inorganic/group1/reacth2o.html<br /><br />^ top of page gives information on this topic.Anonymoushttps://www.blogger.com/profile/00950485229849485297noreply@blogger.com