Write the chemical equation for the chemical reaction shown in the illustration. In the illustration: The black sphere represents a carbon atom. The white sphere represents a hydrogen atom. The grey sphere represents an oxygen atom.

According to the given image, There are two reactants in the reaction. The first reactant contains one atom of carbon and four atoms of hydrogen, so it is a methane molecule and its molecular formula is CH 4 . The second reactant contains two molecules each containing two atoms of oxygen. On the other side, the first product formed is carbon dioxide CO 2 containing one carbon atom and two oxygen atoms. The second product formed is two water molecules 2 H 2 O . It is an example of a combustion reaction, the equation for the same can be written as, CH 4 + 2 O 2 → CO 2 + 2 H 2 O

E M B I B E

Living Science 7>Chapter 3 - Structure of Matter>EXERCISES>Q 1

MEDIUM

7th CBSE

IMPORTANT

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The symbol of an element is $X$ . Is it possible that the formula of the element will also be $X$ ? Explain with examples.

Important Questions on Structure of Matter

HARD

7th CBSE

IMPORTANT

Living Science 7>Chapter 3 - Structure of Matter>EXERCISES>Q 2

Scientists can break atoms to get still smaller particles. In the light of what you have read in this chapter, do you think that a broken atom of say gold, will have the same properties as the atom of gold?