https://padlet.com/laurenbuntz1/ivpt7owuejhq Post a reflection on something you have learnt after reviewing your most recent test on water. en-us 2016-08-01 10:19:23 UTC 2017-05-17 09:58:44 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Soccerball.png laurenbuntz1 https://padlet.com/laurenbuntz1/ivpt7owuejhq/wish/117289397 LMB]]> 2016-08-01 10:27:23 UTC https://padlet.com/laurenbuntz1/ivpt7owuejhq/wish/117289397 https://padlet.com/laurenbuntz1/ivpt7owuejhq/wish/117747026 Water has a low density in solid form. This is because when water molecules loose kinetic energy they have more time to form an open arrangement of 4 intermolecular bonds with water molecules. This open structure causes there to be a large volume of small mass => low density. this property is beneficial for aquatic life in polar regions, as ice sitting on top of water insulates water below, regulating temperature for wildlife ]]> 2016-08-08 23:13:59 UTC https://padlet.com/laurenbuntz1/ivpt7owuejhq/wish/117747026 https://padlet.com/laurenbuntz1/ivpt7owuejhq/wish/117747267 Water has a very high latent heat value and a high specific heat capacity due to the strong hydrogen bonds holding the molecules together. These bonds can hold a large amount of energy and also release a large amount of energy. Due to this, water is an excellent coolant. It is both cheap, readily available and relatively non-corrosive, therefore it is very practical.]]> 2016-08-08 23:18:58 UTC https://padlet.com/laurenbuntz1/ivpt7owuejhq/wish/117747267 https://padlet.com/laurenbuntz1/ivpt7owuejhq/wish/117747382 Latent heat is the heat energy required to changed a fixed amount of substance from a solid to a liquid or liquid to gas. The latent heat of fusion (solid to liquid at MP) of water is 6.0kJ/mol (some hydrogen bonds are broken) whereas its latent heat of vaporisation (liquid to gas at boiling PT) is 44.0kJ (completely break Hydrogen bonds.) WOW]]> 2016-08-08 23:20:54 UTC https://padlet.com/laurenbuntz1/ivpt7owuejhq/wish/117747382 https://padlet.com/laurenbuntz1/ivpt7owuejhq/wish/117747385 2016-08-08 23:20:55 UTC https://padlet.com/laurenbuntz1/ivpt7owuejhq/wish/117747385 https://padlet.com/laurenbuntz1/ivpt7owuejhq/wish/117747594 From this test, I learnt that water has many useful properties, one of which includes the fact that water readily dissolves many ionic salts!!!! I also learnt that water does not always boil at 100 degrees....ALSO learnt that water has 2 hydrogen atoms and ONE oxygen atom ;-))]]> 2016-08-08 23:23:57 UTC https://padlet.com/laurenbuntz1/ivpt7owuejhq/wish/117747594 https://padlet.com/laurenbuntz1/ivpt7owuejhq/wish/117748053 After reflecting on the test, I have learnt that dissolving some substances can make the liquid conduct electricity]]> 2016-08-08 23:30:03 UTC https://padlet.com/laurenbuntz1/ivpt7owuejhq/wish/117748053 https://padlet.com/laurenbuntz1/ivpt7owuejhq/wish/117748319 2016-08-08 23:33:54 UTC https://padlet.com/laurenbuntz1/ivpt7owuejhq/wish/117748319 https://padlet.com/laurenbuntz1/ivpt7owuejhq/wish/117755455 At the end of this unit, looking at all the unique properties of water and seeing how the special characteristics of hydrogen bonding with oxygen has all these amazing consequences resulting in its abundance, SHC, universal solvency, etc]]> 2016-08-09 01:42:03 UTC https://padlet.com/laurenbuntz1/ivpt7owuejhq/wish/117755455 https://padlet.com/laurenbuntz1/ivpt7owuejhq/wish/117755469 How to answer a question to the appropriate number of significant figures.
i.e. 1.9 x 10^2 (2.s.f.)]]> 2016-08-09 01:42:22 UTC https://padlet.com/laurenbuntz1/ivpt7owuejhq/wish/117755469 https://padlet.com/laurenbuntz1/ivpt7owuejhq/wish/117755602 I learnt that doing questions from the textbook is a good revision tool]]> 2016-08-09 01:44:02 UTC https://padlet.com/laurenbuntz1/ivpt7owuejhq/wish/117755602 https://padlet.com/laurenbuntz1/ivpt7owuejhq/wish/117755610 Writing charges for ions, using significant figures and ]]> 2016-08-09 01:44:14 UTC https://padlet.com/laurenbuntz1/ivpt7owuejhq/wish/117755610 https://padlet.com/laurenbuntz1/ivpt7owuejhq/wish/117756095 I learnt that the reason why only 1% of water molecules decompose at 2000°C is due to intramolecular  forces in the water molecules]]> 2016-08-09 01:51:09 UTC https://padlet.com/laurenbuntz1/ivpt7owuejhq/wish/117756095 https://padlet.com/laurenbuntz1/ivpt7owuejhq/wish/117763050 I learnt that the molar mass of water is actually realistically truly astonishingly 18 instead of the boring old lesser of a number 16.]]> 2016-08-09 03:30:56 UTC https://padlet.com/laurenbuntz1/ivpt7owuejhq/wish/117763050