9 class

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  Laboratory work #8: «Chemical Properties of Calcium Oxide»

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   Laboratory work #13: “Common Properties of Nitric Acid with Other Acids”

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   Laboratory work #10: «Properties of hydrochloric acid solution»

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   Laboratory work #16: «Properties of Acetic Acid»

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  Laboratory work #15: «Determination of Carbon Content in Food Products»

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  Laboratory work #14: «The effect of acetic acid on eggshell»

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  Laboratory work #11-12: «Model of nitrogen and ammonia molecules»

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  Laboratory work #17: «Protein denaturation»

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  Using electricity to communicate

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  Determining water quality to understand human influence