Questions and Answers
What happens to the constituent atoms of the reactants in a chemical reaction?
They are rearranged
What is the result of a chemical change?
One or more new substances with new physical and chemical properties
What is an example of a chemical reaction?
Copper sulphate reacting with iron
What are the reactants in a chemical reaction changed into?
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What is formed in the reaction between copper sulphate and iron?
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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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