Physics
Grade-9
Easy
Question
What does it take for a state to change?
- Light
- Heat
- Wind
- Water
The correct answer is: Heat
Heat Energy is required to change the state of a matter. Heat breaks the bonds between molecules and make them loosely packed.
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The boiling point of water is ____.
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Mercury freezes at around -38.33o Celsius. What is the state of mercury at 30o Celsius?
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