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CHEMISTRY CH10 Matter Around Us — Science STD 9 — Question

Tamilnadu BoardEnglish MediumSTD 9ScienceCHEMISTRY CH10 Matter Around Us4 Marks
Question
Tabulate Differences between mixtures and compounds.
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Answer

  • Mixtures
    1. A mixture can be separated into its constituents by physical processes like filtration, evaporation, sublimation, magnet distillation, solvent extraction.
    2. A mixture retains or shows the properties of its constituents
    3. Energy (in the form of heat light etc.) is neither given out nor absorbed in the preparation of a mixture
    4. The composition or proportion is variable a mixture does not have a definite formula
    5. A mixture does not have a fixed boiling point or melting point
    Compounds :
    1. A compound cannot be separated into its constituents by physical processes but can be only separated by a chemical process
    2. The properties of a compound are entirely different from those of its constituent elements
    3. Energy (in the forth of heat, light etc.) is given out or absorbed during the preparation of a compound
    4. The composition of a compound is fixed. The constituents are present in a fixed ratio by mass. The compound has a definite formula.
    5. A compound has a fixed boiling point or melting point

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