Chemical Reactions Quiz

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What are the substances which take part in a chemical reaction called?

Products

Equations

Catalysts

Reactants (correct)

Which of the following is an example of a chemical reaction?

Melting of ice

Boiling of water

Rusting of Iron (correct)

Dissolving sugar in water

What helps to determine whether a chemical reaction has taken place?

Change in volume

Change in state (correct)

Change in density

Change in shape

What is a chemical equation?

A symbolic representation of a chemical reaction Signup and view all the answers

Why is it important to mention the physical state of the reactants and products in a chemical equation?

To make the chemical reaction more informative Signup and view all the answers

Which observation helps to determine whether a chemical reaction has taken place?

Evolution of a gas Signup and view all the answers

What is the symbolic representation of a chemical reaction called?

Chemical equation Signup and view all the answers

What are the substances formed in a chemical reaction called?

Products Signup and view all the answers

What does the Law of Conservation of Mass state?

Mass remains constant in a chemical reaction Signup and view all the answers

Why is it important to mention the physical state of the reactants and products in a chemical equation?

To make the reaction more informative Signup and view all the answers

Which of the following is a necessary condition to determine whether a chemical reaction has taken place?

Formation of a precipitate Signup and view all the answers

What is the symbolic representation of a chemical reaction called?

Molecular equation Signup and view all the answers

Which method is used to balance chemical equations based on the Law of Conservation of Mass?

Fractional coefficients method Signup and view all the answers

Which observation helps to determine whether a chemical reaction has taken place?

Evolution of heat Signup and view all the answers

What does the symbol (aq) represent in a chemical equation?

Aqueous solution Signup and view all the answers

Chemical Reactions Quiz

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Questions and Answers

What are the substances which take part in a chemical reaction called?

Which of the following is an example of a chemical reaction?

What helps to determine whether a chemical reaction has taken place?

What is a chemical equation?

Why is it important to mention the physical state of the reactants and products in a chemical equation?

Which observation helps to determine whether a chemical reaction has taken place?

What is the symbolic representation of a chemical reaction called?

What are the substances formed in a chemical reaction called?

What does the Law of Conservation of Mass state?

Why is it important to mention the physical state of the reactants and products in a chemical equation?

Which of the following is a necessary condition to determine whether a chemical reaction has taken place?

What is the symbolic representation of a chemical reaction called?

Which method is used to balance chemical equations based on the Law of Conservation of Mass?

Which observation helps to determine whether a chemical reaction has taken place?

What does the symbol (aq) represent in a chemical equation?

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