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WorksheetsChemistry Quiz: Electrolysis of Water
Total questions: 10
Worksheet time: 5mins
What is the purpose of the experiment described in the text?
To split the water molecule into oxygen and hydrogen
To generate electricity from solar power
To create synthetic fuels like ethanol
To study the properties of fossil fuels
Why are pencil leads used as electrodes in the experiment?
Because they are colorful
Because they are resistant to corrosion
Because they are highly conductive
Because they are cheap and easily available
What safety precautions are recommended for the experiment?
Conduct the experiment alone
Wear eye protection and gloves
Have a pet with you for assistance
Use the experiment outdoors
What is the purpose of the small bags or latex gloves attached to the bottles?
To add color to the experiment
To prevent the gases from escaping
To collect excess water
To measure the temperature of the gases
How are the two 2L bottles connected in the experiment?
By using a magnet
By shaking the bottles vigorously
By pouring the contents from one bottle to another
By using a straw and hot glue
What is the main goal of splitting the water molecule into oxygen and hydrogen?
To increase the water's pH level
To create a chemical reaction
To study the properties of water
To collect the two gases for fuel
Why is it important to not let the bags or gloves collect too much gas?
To keep the experiment clean
To avoid explosions as the gases are highly explosive
To prevent the gases from escaping
To measure the volume of the gases accurately
What is the role of the steel wire in the experiment?
To conduct electricity
To stir the solution
To measure the temperature
To hold the bottles together
How can we show whether the gases collected are oxygen or hydrogen?
By tasting the gases
By performing a flame test
By using a pH indicator
By observing the color of the gases
What is the source of energy used to run the electrolysis machine?
Solar power
Wind power
Electricity from two 9V batteries
Chemical energy from the water
