Chemistry
Grade-10
Easy
Question
Which statement is not a description of a chemical reaction?
- A solid is dropped into a beaker of liquid, and a gas is released.
- Two liquids are mixed in a beaker, and solid forms at the bottom of the beaker.
- A solid is dropped into a beaker of liquid, and an explosion occurs.
- A liquid is heated in the sun, and half of it evaporates.
Hint:
A process that involves rearrangement of the molecular or ionic structure of a substance, as distinct from a change in physical form or a nuclear reaction.
The correct answer is: A liquid is heated in the sun, and half of it evaporates.
The statement "A liquid is heated in the sun, and half of it evaporates" is not a description of a chemical reaction.
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