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Chemical Reactions and Equations

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Questions and Answers

What happens to the constituent atoms of the reactants in a chemical reaction?

They remain unchanged

They are rearranged (correct)

They are destroyed

They disappear

What is the result of a chemical change?

Only physical change

No change in substances

One substance with old properties

One or more new substances with new physical and chemical properties (correct)

What is an example of a chemical reaction?

Copper sulphate reacting with iron (correct)

Ice melting into water

Water evaporating into steam

Iron reacting with air

What are the reactants in a chemical reaction changed into?

<p>One or more products</p> Signup and view all the answers

What is formed in the reaction between copper sulphate and iron?

<p>Ferrous sulphate and copper</p> Signup and view all the answers

Study Notes

Chemical Reactions

A chemical reaction occurs when one or more reactants are transformed into one or more products.
In a chemical reaction, the constituent atoms of the reactants are rearranged to form new substances as products.

Physical and Chemical Changes

A chemical change occurs when one or more new substances with new physical and chemical properties are formed.

Chemical Reactions and Equations

When copper sulphate reacts with iron, two new substances are formed: ferrous sulphate and copper.
This reaction is an example of a chemical change, resulting in the formation of new substances with new physical and chemical properties.

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Description

This quiz covers the basics of chemical reactions, including reactants, products, and the formation of new substances. Learn about physical and chemical changes, and how to write chemical equations.