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Which substance cannot be broken down by chemical changes? Magnesium Hydroxide Carbon Dioxide b O Ammonia Iron​

User Merwok
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2 votes

Answer:

Iron

Step-by-step explanation:

The only substance that cannot be broken down by a chemical change is Iron.

Iron is an element and elements are made up of atoms. Atoms are the smallest indivisible particles that takes part in chemical reactions.

  • Other choices are compounds.
  • Compounds are made by combining atoms together through the loss, gain or sharing of electrons.
  • This interaction creates bonds between two or more species.
  • But for substances made up of atoms alone, no bonds are formed and hence, they cannot be further broken down.
User Shaquawna
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