Science by Samia Batool - 70691/TCHR/BHQSM https://padlet.com/samia70691/uroxirycz5hren0k Chemical Reactions en-us 2020-06-22 19:59:53 UTC 2020-06-24 07:04:36 UTC hello@padlet.com https://padlet.net/icons/png/1f308.png Chemical Reactions caused by electricity samia70691 https://padlet.com/samia70691/uroxirycz5hren0k/wish/636582504 Sometimes, energy in the form of heat,light or electricity is needed for a chemical reaction to take place.
e.g: 1)Iron and sulfur heated together to form iron sulfide
2) Light energy is needed for photosynthesis ( water+carbon dioxide---> food)
3) Electrolysis of water ( water---> Hydrogen+oxygen)]]> 2020-06-22 20:03:36 UTC https://padlet.com/samia70691/uroxirycz5hren0k/wish/636582504 Chemical Reactions caused by Heat samia70691 https://padlet.com/samia70691/uroxirycz5hren0k/wish/636590129 Thermal decomposition
Combination Reaction
Combustion Reaction]]> 2020-06-22 20:11:38 UTC https://padlet.com/samia70691/uroxirycz5hren0k/wish/636590129 Chemical Reactions caused by mixing samia70691 https://padlet.com/samia70691/uroxirycz5hren0k/wish/636590699 Acids react with metals (Hydrogen gas is produced)
Acids react with carbonates and bicarbonates (Carbon dioxide gas is produced)
Rusting of Iron and corrosion of metals:
Rusting is an oxidation reaction. The iron reacts with water and oxygen to form hydrated iron(III) oxide, which we see as rust. Here is the word equation for the reaction: iron + water + oxygen → hydrated iron(III) oxide

]]> 2020-06-22 20:12:16 UTC https://padlet.com/samia70691/uroxirycz5hren0k/wish/636590699 Difference between Corrosion and rusting samia70691 https://padlet.com/samia70691/uroxirycz5hren0k/wish/638382167 2020-06-24 06:47:56 UTC https://padlet.com/samia70691/uroxirycz5hren0k/wish/638382167 What is the difference between Rusting and burning? samia70691 https://padlet.com/samia70691/uroxirycz5hren0k/wish/638384563 1. Rusting is the process in which iron slowly reacts with oxygen in the air and produces a flaky substance called "rust"
where as Burning is a fast oxidation process in which large amount of energy is produced
2. Rusting requires oxygen and moisture
whereas burning requires only oxygen]]> 2020-06-24 06:50:17 UTC https://padlet.com/samia70691/uroxirycz5hren0k/wish/638384563 Burning,combustion and respiration samia70691 https://padlet.com/samia70691/uroxirycz5hren0k/wish/638395630 2020-06-24 07:00:42 UTC https://padlet.com/samia70691/uroxirycz5hren0k/wish/638395630