6.2

COMPOUNDS MIXTURES

Msubstance consisting of atoms or ions of two or more different elements in definite proportions joined by chemical bonds into a molecule. The elements cannot be separated by physical means. Water, for example, is a compound having two hydrogen atoms and one oxygen atom per molecule.

Mixture is a material made up of two or more different substances which are mixed but are not combined chemically. A mixture refers to the physical combination of two or more substances in which the identities are retained and are mixed in the form of solutions, suspensions, and colloids.

MOLECULAR COMPOUNDS

A molecular compound can be defined as a compound where the atoms share electrons through covalent bonds. It is also known as a covalent compound. The covalent bonds are what hold the molecule together.When atoms share electrons, they are able to have a full outer electron shell.

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D-N-A

Deoxyribonucleic acid is a molecule that carries the genetic instructions used in the growth, development, functioning and reproduction of all known living organisms and many viruses

LATTICE COMPOUND

Molecules and lattices. There are two different structures that form when two or more elements join together to make a compound. One of these is a molecule

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MIXTURES

Mixtures can be found everywhere. Any two or more items that are combined can be a mixture. The different parts of a mixture can be separated out into their individual parts Common Mixtures of Food Oil and water Lemon juice and tea Honey and tea Milk and chocolate Coffee and cream TAP WATER

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