https://padlet.com/sfriedman2022/yxypb2olg32y Sydney Friedman en-us 2018-03-01 16:49:13 UTC 2026-02-02 20:19:06 UTC hello@padlet.com sfriedman2022 https://padlet.com/sfriedman2022/yxypb2olg32y/wish/239226608 This is a video of the chemical reaction involving baking soda and vinegar. A gas is created called carbon dioxide which is also an effervescence. The chemical reaction is endothermic because it absorbs heat. ]]> 2018-03-07 16:07:43 UTC https://padlet.com/sfriedman2022/yxypb2olg32y/wish/239226608 sfriedman2022 https://padlet.com/sfriedman2022/yxypb2olg32y/wish/239235022 This is a video of someone burning sugar. This is a chemical reaction because it gives off an aroma. After the reaction the sugar is burnt to a solid. The reaction is exothermic because it is giving off heat. ]]> 2018-03-07 16:20:28 UTC https://padlet.com/sfriedman2022/yxypb2olg32y/wish/239235022 sfriedman2022 https://padlet.com/sfriedman2022/yxypb2olg32y/wish/239240303 This video is a chemical reaction between a sugar solution and potassium permanganate. Once the potassium permanganate is mixed with the solution it turns multiple different colors. A new substance called manganese dioxide (MnO2) is formed from this reaction. ]]> 2018-03-07 16:28:40 UTC https://padlet.com/sfriedman2022/yxypb2olg32y/wish/239240303 sfriedman2022 https://padlet.com/sfriedman2022/yxypb2olg32y/wish/239761206 Combustion is the act of burning something. Combustion is exothermic because it is giving off heat. A couple of things can happen during combustion. It releases oxygen heat and energy! Ash and coal is one of the new substances formed.]]> 2018-03-08 16:39:39 UTC https://padlet.com/sfriedman2022/yxypb2olg32y/wish/239761206 sfriedman2022 https://padlet.com/sfriedman2022/yxypb2olg32y/wish/239768404 This is a video of lead nitrate and potassium iodide chemical reaction. This reaction created a precipitate. The precipitate is lead iodide. This reaction is endothermic because it is absorbing heat. ]]> 2018-03-08 16:49:58 UTC https://padlet.com/sfriedman2022/yxypb2olg32y/wish/239768404 sfriedman2022 https://padlet.com/sfriedman2022/yxypb2olg32y/wish/239775080 A new substance is formed when Iron and Oxygen mix. This chemical reaction results in the precipitate of rust. The rust is formed over time by the iron and oxygen mixing. ]]> 2018-03-08 16:59:44 UTC https://padlet.com/sfriedman2022/yxypb2olg32y/wish/239775080 sfriedman2022 https://padlet.com/sfriedman2022/yxypb2olg32y/wish/240243004 This is a video of alka seltzer and water. You can see the fizzing (effervesce) when the tablet hits the water. The reaction is exothermic because it is giving of heat. In result of this carbon dioxide is made.]]> 2018-03-09 16:36:59 UTC https://padlet.com/sfriedman2022/yxypb2olg32y/wish/240243004 sfriedman2022 https://padlet.com/sfriedman2022/yxypb2olg32y/wish/240246601 When cooking bacon it produces a very good smell. That chemical reaction is endothermic because it is absorbing the heat. It gives off such a good smell because of Maillard Reaction. The maillard reaction is a chemical reaction between amino acids and reducing sugars that gives browned food its distinctive flavor.]]> 2018-03-09 16:43:16 UTC https://padlet.com/sfriedman2022/yxypb2olg32y/wish/240246601 sfriedman2022 https://padlet.com/sfriedman2022/yxypb2olg32y/wish/240252316 This is a video of wood burning. This reaction is exothermic because it is giving off heat. When the wood burns it gives off heat, energy and carbon dioxide. ]]> 2018-03-09 16:52:32 UTC https://padlet.com/sfriedman2022/yxypb2olg32y/wish/240252316 sfriedman2022 https://padlet.com/sfriedman2022/yxypb2olg32y/wish/240255624 The ice pack is also a change in temperature. Once you break and shake it, it turns cold. The reaction when you use a ice pack is endothermic. ]]> 2018-03-09 16:57:37 UTC https://padlet.com/sfriedman2022/yxypb2olg32y/wish/240255624 sfriedman2022 https://padlet.com/sfriedman2022/yxypb2olg32y/wish/240258159 Salt is made from the chemical reaction of sodium and chlorine. The compound sodium chloride is what makes up salt and is exothermic.]]> 2018-03-09 17:02:03 UTC https://padlet.com/sfriedman2022/yxypb2olg32y/wish/240258159 sfriedman2022 https://padlet.com/sfriedman2022/yxypb2olg32y/wish/240259126 This reaction is of calcium chloride and baking soda. In the end of this chemical reaction a precipitate is formed. It makes a sodium bicarbonate. ]]> 2018-03-09 17:03:52 UTC https://padlet.com/sfriedman2022/yxypb2olg32y/wish/240259126