Question

ᴡʜᴀᴛ ɪs ᴍᴇᴀɴᴛ ʙʏ ᴀ ᴘᴜʀᴇ sᴜʙsᴛᴀɴᴄᴇ?​

Answer 1

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.

Answer 2

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• 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.

➡Examples of Pure Substances

• All elements are mostly pure substances. A few of them include gold, copper, oxygen, chlorine, diamond, etc. Compounds such as water, salt or crystals, baking soda amongst others are also grouped as pure substances.