Elements, Compounds & Mixtures

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THE PERIODIC TABLE

Bronwyn Heardにより

Cations

Ben Doverにより

Matter in Our Surroundings

Siddhi Kumariにより

Life Cycle of a Star

Ahmed Elsharifにより

Elements, Compounds & Mixtures

Mixture

Dirt and water (Mud)

Sand, water and gravel (Cement)

Smoke and fog (Smog)

A mixture is made when two or more substances are combined, but they are not combined chemically.

Element

an element is a substance that cannot be broken down into simpler components by any non-nuclear chemical reaction

examples

H - Hydrogen.

He - Helium.

O - Oxygen.

Compound

Examples

carbondioxide

Table salt

water

Water

A compound is a material formed by chemically bonding two or more chemical elements