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

Slide 6