Question

Sucrose (sugar) crystals obtained from sugarcane and beetroot are mixed together. Will it be a pure substance or a mixture? Give reasons for the same.

Answer 1

Pure substance

• It will be a pure substance because the chemical composition of sugar crystals derived from sugarcane or beetroot will be the same.
• Pure substances are substances that are made up of only one kind of particle and have a fixed or constant structure.

Characteristics of pure substances

• Pure substances are mostly homogeneous in nature containing only one type of atom or molecule.
• 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: Gold, copper, oxygen, chlorine, diamond, water, salt or crystals, etc.