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Catégories : Tous - substances - chemical - bonding - elements

par Jiao Wenbo (Woodgrovess) Il y a 2 années

252

Elements, Compounds & Mixtures

The text discusses the basic concepts of elements, compounds, and mixtures in chemistry. Compounds are described as materials formed by the chemical bonding of two or more elements, with examples such as carbon dioxide, table salt, and water.

Elements, Compounds & Mixtures

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Mixture

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

examples

H - Hydrogen.

O - Oxygen.

Compound

Examples

carbondioxide

Table salt

water

Water

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