https://padlet.com/xavierwong1611/8dl4ohytujvzvph5 Post your picture or video of your experiment to show the reactions and provide an explanation of each reaction. en-us 2021-08-04 07:29:08 UTC 2023-03-25 20:58:33 UTC hello@padlet.com xavierwong1611 https://padlet.com/xavierwong1611/8dl4ohytujvzvph5/wish/1668707967 Acids : hydrochloric acid
Bases : calcium carbonate and potassium oxide 
Alkalis : sodium hydroxide, potassium hydroxide and calcium hydroxide
Salts : sodium chloride, potassium dichromate, calcium chloride and sodium bisulfate ]]> 2021-08-04 08:22:55 UTC https://padlet.com/xavierwong1611/8dl4ohytujvzvph5/wish/1668707967 xavierwong1611 https://padlet.com/xavierwong1611/8dl4ohytujvzvph5/wish/1668711756 Acids : yogurt, vinegar and lemon juice 
Carbonates : detergent powders, tablets and other cleaning products like laundry additives and etc…
Metals : pots and pans, drinking water bottles and plates, bowls and mugs, aluminium foil ]]> 2021-08-04 08:28:04 UTC https://padlet.com/xavierwong1611/8dl4ohytujvzvph5/wish/1668711756 xavierwong1611 https://padlet.com/xavierwong1611/8dl4ohytujvzvph5/wish/1671944880 When i added baking powder with is my carbonate to soured milk with is my acid. Both reactants start to react and release carbon dioxide. The carbon dioxide is trap in the mixture as air bubbles and when heating it expands and causes the dough to rise.
Bellow is a picture of the end product after heating(baking) ]]> 2021-08-08 07:07:04 UTC https://padlet.com/xavierwong1611/8dl4ohytujvzvph5/wish/1671944880 xavierwong1611 https://padlet.com/xavierwong1611/8dl4ohytujvzvph5/wish/1671945438 2021-08-08 07:09:20 UTC https://padlet.com/xavierwong1611/8dl4ohytujvzvph5/wish/1671945438 xavierwong1611 https://padlet.com/xavierwong1611/8dl4ohytujvzvph5/wish/1672310943 After adding toothpaste with is a base to lemon juice with is a acid, both reactants react and begin to neutralise. This is because acid and bases are polar opposites. The solution begins to be less acidic and produces a salt. The picture bellow is the solution of the lemon juice and the toothpaste ]]> 2021-08-09 02:09:24 UTC https://padlet.com/xavierwong1611/8dl4ohytujvzvph5/wish/1672310943 xavierwong1611 https://padlet.com/xavierwong1611/8dl4ohytujvzvph5/wish/1672311450 2021-08-09 02:09:57 UTC https://padlet.com/xavierwong1611/8dl4ohytujvzvph5/wish/1672311450 xavierwong1611 https://padlet.com/xavierwong1611/8dl4ohytujvzvph5/wish/1672316492 On day 1 of the experiment no changes can be seen on the iron nail
On day 2 of the experiment a small amount of rust can be spotted
On day 3 of the experiment a larger amount of rust can be seem 
The rust is from through oxidation, when iron is exposed to oxygen and water. The oxygen reacts and from hydrogen ions which reacts with the iron to from hydrous iron oxide or better Kwon as rust
The bellow is a picture of the rust on day 3 of the experiment ]]> 2021-08-09 02:15:34 UTC https://padlet.com/xavierwong1611/8dl4ohytujvzvph5/wish/1672316492 xavierwong1611 https://padlet.com/xavierwong1611/8dl4ohytujvzvph5/wish/1672318751 There are signs of corrosion on the iron nail, this is because the oxygen and water are breaking down the iron nail to from rust which is present on the other side of the nail]]> 2021-08-09 02:17:57 UTC https://padlet.com/xavierwong1611/8dl4ohytujvzvph5/wish/1672318751 xavierwong1611 https://padlet.com/xavierwong1611/8dl4ohytujvzvph5/wish/1677761968 Acids are liquids with a low Ph level and taste sour, it dissolves in water to produce hydroxide ions 
Bases are a substance that increases the concentration of hydroxide ions when mixed with an acid
Alkalis are substances with a high Ph level so when mixed with an acid it neutralise the substance 
Salts are produced when a acid reacts to a base]]> 2021-08-13 04:30:42 UTC https://padlet.com/xavierwong1611/8dl4ohytujvzvph5/wish/1677761968