explain pure substance?
Answers
Answer:
Explanation:
A substance that has a fixed chemical composition throughout is called a pure substance such as water, air, and nitrogen. A pure substance does not have to be of a single element or compound.
Answer:
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Explanation:
Everything that exists in the earth is a form of a matter which is further defined as any substance that occupies space and has mass. The matter is further divided into various forms such as solid, liquid and gas. Apart from these, it is also classified as pure substances and mixtures.
Pure substances are substances that are made up of only one kind of particles and has a fixed or constant structure.
Pure substances are further classified as elements and compounds.
An element is a substance that consists of only one type or kind of atom. An element is a pure substance as it cannot be broken down or transformed into a new substance even by using some physical or chemical means. Elements are mostly metals, non-metals or metalloids.
Compounds, on the other hand, are also pure substances when two or more elements are combined chemically in a fixed ratio. However, these substances can be broken down into separate elements by chemical methods.
Characteristics and Properties Of Pure Substances
- Pure substances are mostly homogeneous in nature containing only one type of atoms or molecules.
- These substances mainly have a constant or uniform composition throughout.
- The substances have fixed boiling and melting points.
- A pure substance usually participates in a chemical reaction to form predictable products.