Question
Try segregating the things around you as pure substances or mixtures
Solution
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Pure Substances: These have a uniform composition and cannot be separated into other substances by physical methods.
- Oxygen (O₂) – An element.
- Gold (Au) – An element.
- Water (H₂O) – A compound.
- Carbon dioxide (CO₂) – A compound.
- Salt (NaCl) – A compound (if pure).
- Copper (Cu) – An element.
Mixtures: These consist of two or more substances physically combined and can be separated into their individual components.
- Air – A mixture of gases like nitrogen, oxygen, carbon dioxide, etc.
- Milk – A colloidal mixture of water, fats, and proteins.
- Tea – A mixture of water, tea leaves, and dissolved compounds.
- Soil – A heterogeneous mixture of organic material, minerals, and water.
- Ice cream – A mixture of cream, sugar, and other ingredients.
- Blood – A mixture of plasma, red blood cells, white blood cells, and platelets.
- Sand and water – A heterogeneous mixture that can be separated by filtration.
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