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WorksheetsComposition of Water
Total questions: 10
Worksheet time: 5mins
Water is a
compound
element
mixture
Water made up of
chlorine
carbon
oxygen
hydrogen
Water combined
chemically
physically
none of above
both answer
We can determine the composition of elements in a water molecule through
photosynthesis
combustion
respiration
electrolysis
Define anode.
electrode that is connected to the positive terminal of a battery
electrode that is connected to the negative terminal of a battery
Define cathode.
the electrode that is connected to the positive terminal of a battery
the electrode that is connected to the negative terminal of a battery
What is the two atoms that made up of a water molecule?
hydrogen atom
oxygen atom
carbon atom
zinc atom
How many atoms represented in a water molecule respectively?
two hydrogen atoms
one hydrogen atom
one oxygen atom
two oxygen atoms
What is the chemical symbol of water?
H2O
O2H
H3O
HO2
What gases that produce at anode and cathode ?
Anode: oxygen gas, cathode: hydrogen gas
Anode: hydrogen gas, cathode: oxygen gas
