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Questions and Answers
Which of the following materials is commonly used as an electrolyte in a simple electric cell?
Which of the following materials is commonly used as an electrolyte in a simple electric cell?
- Plastic
- Aluminum
- Saltwater (correct)
- Copper
What happens to the metal electrodes when an electric current passes through them?
What happens to the metal electrodes when an electric current passes through them?
- They become magnetic
- They become lighter
- They become heavier (correct)
- They remain the same
Which of the following is an example of a chemical change caused by electric current?
Which of the following is an example of a chemical change caused by electric current?
- Melting of ice
- Boiling of water
- Mixing of salt and water
- Burning of paper (correct)
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