C1 Topic 2- Acids, Neutalisations And Obtaining Metals Flashcards
Product of Acid+Base
Acid+Base > Sodium+H2O
Why is hydrochloride acid produced by the human stomach?
Hydrochloride acid is produced by the human stomach because it helps the digestive system by breaking down protein and it kills bacteria.
Product of Acid+Carbonate
Acid+Carbonate > Carbon dioxide+H2O
What is electrolysis used for?
Electrolysis is used to make chlorine gas, hydrogen gas and oxygen gas.
chemical decomposition produced by passing an electric current through a liquid or solution containing ions.
the removal of hair roots or small blemishes on the skin by the application of heat using an electric current.
Describe the Chlorine Test
Dip a damp piece of litmus paper into a test tube. If it’s chlorine it will bleach the paper white
Describe the Hydrogen Test
Squeaky Pop Test
Place a lightened splint into the test tube. If it hydrogen it will make ‘squeaky pop’ sound
Name the products of Electrolysis of Dilute Hydrochloric Acid
H2 and Cl2
Hydrogen and Chlorine
Product of Electrolysis of Brine (Salt/Sea Water)
Sodium Hydroxide (NaOH)
Hydrogen (H2)
Chlorine (Cl)
3 uses of Chlorine
Treats Water Supplies
Bleach Manufacturing
Makes Polymer Poly(chloroethene)
What are the products of Water Electrolysis?
Hydrogen Gas (H2) Oxygen Gas (O2)
Oxygen Test
Light a splint, blow it out, put it in the test tube if it delights it oxygen
Iron is extracted from its Ore how?
By heating it with carbon (it has a lower reactivity than carbon)
Aluminium is extracted by what?
Electrolysis (it has a higher reactivity than carbon)
Reactivity Series
Potassium (K) Sodium (Na) Calcium (Ca) Magnesium (Mg) Aluminium (Al) Carbon (C) Zinc (Zn) Iron (Fe) Tin (Sn) Lead (Pb)
Which Metals use Electrolysis to be extracted from their ores?
(Highest to lowest order)
Potassium (K) Sodium (Na) Calcium (Cl) Magnesium (Mg) Aluminium (Al)
Which metals need to be extracted from their Ores by being heated with Carbon?
Zinc (Zn)
Iron (Fe)
Tin (Sn)
Lead (Pb)
Why are some metals extracted via Electrolysis and other through being heated with Carbon?
Electrolysis is used to extract metals with a higher reactivity than carbon.
Heating metals with Carbon is used to extract metals with a lower reactivity than carbon.
What are the environmental advantages of recycling metals?
It uses less resources (finite amount of metal, conserves resources)
It uses less energy ( mining, extracting metals, burning fossil fuels=lot)
It uses less money (energy isn’t cheap, saves money)
It makes less waste ( cuts amount going to landfill, space, pollution)
