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  • Video Quiz

    DNA EXTRATION

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    DNA or deoxyribonucleic acid is a complex chemical substance which contains genetic information and which regulates the functioning of the cell....

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    Acids and bases

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    In nature there are different types of substances, some are ACID, other BASIC and other NEUTRAL. To determine the type of a particular substance, we use pH indicators. These indicators change colour a...

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    SOLUBILITY

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    ALCA SCHOOL. SPAIN...

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    DENSITY 2

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    ALCA SCHOOL. SPAIN...

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    DENSITY 1

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    ALCA SCHOOL. SPAIN...