What does a chemical equation represent?

A chemical reaction using symbols and formulas

The physical properties of a substance

Class 9 Chemistry · Chapter 4 · Test 7

Chemical Equations and Balancing

25 MCQs covering chemical equations, reactants and products, word equations, chemical symbols and formulas, the law of conservation of mass, coefficients, subscripts, and balancing chemical equations using the inspection method.

MCQs

25 questions · 20 min · 25 marks

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Sample questions

The first 5 of 25. Try each one, then tap to see the answer.

Question 1
What does a chemical equation represent?
- AThe physical properties of a substance
- BA chemical reaction using symbols and formulas
- CThe color of reactants
- DThe mass of a single atom
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Answer: B
A chemical equation represents a chemical reaction using chemical formulas and symbols.
Question 2
Which substances are written on the left side of a chemical equation?
- AProducts
- BCatalysts
- CReactants
- DSpectators
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Answer: C
Reactants are written on the left side of a chemical equation.
Question 3
Which substances are written on the right side of a chemical equation?
- AReactants
- BProducts
- CElements only
- DCatalysts
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Answer: B
Products are written on the right side of a chemical equation.
Question 4
What does the arrow in a chemical equation indicate?
- AEqual masses
- BReversible reaction only
- CProduces or yields
- DAddition of atoms
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Answer: C
The arrow separates reactants from products and means produces or yields.
Question 5
Which symbol represents hydrogen gas in a chemical equation?
- AH
- BH2
- CH3
- D2H2
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Answer: B
Hydrogen gas exists as diatomic molecules and is written as H2.

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