Chemistry
Grade-10
Easy

Question

What is a chemical change?

  1. How two chemicals react with one another when combined
  2. A property that we can measure or observe with our 5 senses or other tools
  3. When two chemicals react with one another to form a new substance
  4. When a change occurs but it does not result in the formation of a new substance

hintHint:

A chemical reaction or chemical change can be defined as the conversion of one or more substances to new substances or products.  

The correct answer is: When two chemicals react with one another to form a new substance


    When two chemicals react with one another to form a new substance  is a chemical change.
    • When a substance undergoes a chemical change, its molecular composition gets altered entirely.
    • Thus, chemical changes involve the formation of new substances.
    • Generally, one substance may undergo decomposition to form new products which can be said to be a chemical change.

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