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C1 Topic 3 (Electrolysis (Anode (Positive charge), Cathode (Negative…
C1 Topic 3
Electrolysis
Anode
Positive charge
Cathode
Negative charge
Example hydrochloric acid
Broken down into hydrogen and chlorine
Using direct current
pH Scale
Alkali
When base is dissolved in water they are an alkali
Base
Some are soluble
pH1 to pH14
pH1= strong acid
pH14=strong alkali
Indigestion
Stomach acid= hydrochloric acid
Kills bacteria
Condition's are right for enzymes to work
Too much stomach acid
Antacids neutralise the excess
Antacids
Metal hydroxides
Metal carbonated
+Carbon Dioxide
Metal oxides
Metal oxide or hydroxide- salt + water
Chemical tests
Hydrogen
test tube should make a pop sound
Chlorine
Damp blue litmus paper turns red
Oxygen
Glowing splint re-lights