Water Flashcards
Name the 5 types of of water treatment
Screening Settling Filtration Chlorination Fluoridation
Screening
Water is passes through a wire mesh to remove any floating materials
Settling
Water flows into large tanks
Aluminium sulfate is added
This causes small particles to come together and settle to the bottom of the ranks
Filtration
The water is passes through beds of sand
Chlorination
Chlorine is added to the water to kill bacteria
Name the two elements of water
Hydrogen
Oxygen
What is it called when hydrogen and oxygen become chemically combined
H2O
Electrolysis
The splitting of water by passing electricity through it
Dilute sulphuric acid
Added to water to make it better conductor of electricity
What apparatus if used for the splitting of water experiment
Hoffmann voltmeter
What is a poor conductor of electricity
Pure water
How much hydrogen gas is produced as oxygen
Twice as much
What burns with a pop
Hydrogen
What is hard water
Water that does not easily lather with soap
What causes scum caused by hard water
Calcium ions + soap
