How to write and balance chemical equations as per NCERT Class 10 Science Chapter 1?
Answer (1)
Writing a chemical equation:
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Identify the reactants and products.
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Write the correct chemical formulae for all.
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Example:
When magnesium burns in air:
Unbalanced:Mg + O₂ → MgO
Balancing a chemical equation:
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Ensure the number of atoms of each element on both sides is equal.
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For the above example:
Balanced:2Mg + O₂ → 2MgO
Steps to balance:
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Write the unbalanced equation.
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Count atoms of each element on both sides.
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Add coefficients (whole numbers) to balance the atoms.
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Never change subscripts of chemical formulae.
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