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water

revision

QuestionAnswer
what is the composition of water 2 hydrogen atoms and 1 oxygen atom
what is the test for water anhydrous copper sulphate turns from white to blue
what causes water hardness calcium and magnesium ions
give two methods of getting rid of hard water boiling and using an ion exchange resin
how is scum formed calcium ions and soap form scum
explain the term electrolysis electrolysis is the production of a chemicl change by electricity
why is sulphuric acid added to the water in the electrolysis experiment to help the water conductg electricity
give an advantage of hard water provides calcium for bones and teeth
give a disadvantage of hard water blocks pipes, leaves scale on kettles and boilers
how can we test to show oxygen is produced during electrolysis use a glowing splint - it reignites
how can be test to show hydrogen is produced during electrolysis use a glowing splint - it burns with a pop
in the ion exchange resin what ion replaces the calcium ion sodium ions
when water is boiled what is the dissolved hydrogen carbonate changed to . solid limestone called 'fur'
what is soft water water that lathers easily with water
The water treatment process involves 5 stages which of the 5 stages involves adding a substance to the water chlorination, fluoridation and settling
what is the name of the chemical added to get rid of germs chlorine
whatis the name of the chemical added to help to reduce tooth decay fluoride
whaqt is the name of the chemical used to take the cloudiness out of the water aluminium sulphate
Created by: mariepkelly