Allied solutions

Allied solutions

Grade 8

Language of Chemistry | Exercise

Question 11

Q11) State what is a balanced equation with a relevant example. Give a reason why an equation is balanced with reference to the law of conservation of matter.

Solution:

When the number of atoms of each element of the reactant/reactants is equal to the number of atoms of the elements of the product/products is same, then the equation is said to be balanced.

For example: 2Mg\ +\ O_22MgO

Reactants = 2 atoms of magnesium and 2 atoms of oxygen

Product = 2 Magnesium Oxide

Reasons for balancing chemical equation:

Law of conservation of matter states that matter is neither created nor destroyed during a chemical reaction.

It is true only if the number of atoms on both sides is equal, because otherwise there will be addition or subtraction of atoms.

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Question 11

Q11) State what is a balanced equation with a relevant example. Give a reason why an equation is balanced with reference to the law of conservation of matter.

Solution:

When the number of atoms of each element of the reactant/reactants is equal to the number of atoms of the elements of the product/products is same, then the equation is said to be balanced.

For example: 2Mg\ +\ O_22MgO

Reactants = 2 atoms of magnesium and 2 atoms of oxygen

Product = 2 Magnesium Oxide

Reasons for balancing chemical equation:

Law of conservation of matter states that matter is neither created nor destroyed during a chemical reaction.

It is true only if the number of atoms on both sides is equal, because otherwise there will be addition or subtraction of atoms.

Still have questions? Our expert teachers can help you out

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Want to top your chemistry exam ?

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subject-cta
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