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Questions and Answers
Which of the following is an example of a physical change?
Which of the following is an example of a physical change?
- Digesting food
- Burning wood
- Rusting iron
- Boiling water (correct)
What is the pH scale used to measure?
What is the pH scale used to measure?
- Acidity (correct)
- Density
- Temperature
- Pressure
Which of the following is a pH indicator?
Which of the following is a pH indicator?
- Lemon juice (correct)
- Oxygen
- Sugar
- Salt
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