Chemistry
Grade-10
Easy
Question
Which of the following is an example of a chemical change?
- Rusting of a bicycle
- Painting a house
- Washing a dog
- Tearing up a newspaper
Hint:
In a chemical change new substance is formed.
The correct answer is: Rusting of a bicycle
- Rusting of bicycle is a chemical change, an oxide film is formed.
- Painting a house is physical change only the color of the house changes.
- Washing a dog is a physical change, dog remains dog it is just cleaned.
- Tearing up a newspaper is a physical change, only size and shape is changed.
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