Question
What is meant by (i) elements (ii) compounds, and (iii) mixtures? Write down the names of two elements, two compounds and two mixtures.
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Answer
- Elements: An element is a substance which cannot be split up into two or more simpler substances by the usual chemical methods of applying heat, light or electricity.
- Compounds: A compound is a substance made up of two or more elements chemically combined in a fixed proportion by mass.
- Mixtures: A mixture is a substance which consists of two or more elements or compounds not chemically combined together.
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