revision unit 1 3rd prep. - Copy.doc - Manaret eleman language schools Date:\u2026\u2026\u2026\u2026\u2026\u2026\u2026\u2026\u2026\u2026\u2026\u2026\u2026\u2026\u2026\u2026\u2026\u2026 science department

revision unit 1 3rd prep. - Copy.doc - Manaret eleman...

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Manaret eleman language schools science department Date:………………………………………………. Prep.3 1-Write the balanced chemical equation: 1-The effect of heat on mercuric oxide ………………………………………………………………………… ………………………………… 2-The effect of heat on copper hydroxide ………………………………………………………………………… …………………………………. 3-The effect of heat on copper sulphate ………………………………………………………………………… ………………………………… 4-The effect of heat on copper carbonate ………………………………………………………………………… …………………………………… 5-The effect of heat on sodium nitrate ………………………………………………………………………… ………………………………… 6-Adding a piece of sodium to water ………………………………………………………………………… …………………………………. 7-The reaction between zinc and hydrochloric acid ………………………………………………………………………… ………………………………… 8- The reaction between aluminium and hydrochloric acid ………………………………………………………………………… …………………………………… 9- The reaction between magnesium and copper sulphate 1
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………………………………………………………………………… ……………………………….. 10-The reaction between sodium hydroxide and hydrochloric acid ………………………………………………………………………… …………………………………… 11-Adding sodium carbonate to hydrochloric acid ………………………………………………………………………… …………………………………… 12-Adding sodium chloride to silver nitrate ………………………………………………………………………… ……………………………… 13-Adding iron to hydrochloric acid ………………………………………………………………………… …………………………………. 14-Adding magnesium to hydrochloric acid ………………………………………………………………………… ………………………………… 15-Passing hydrogen gas over hot copper oxide ………………………………………………………………………… ………………………………... 1-Write the balanced chemical equation: 1-The effect of heat on mercuric oxide 2HgO 2Hg + O 2 mercuric oxide mercury Red Silver color 2-The effect of heat on copper hydroxide Cu(OH) 2 CuO + H 2 O Copper hydroxide Copper oxide Blue black 2
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3-The effect of heat on copper sulphate CuSO 4 CuO + SO 3 Copper sulphate Copper oxide sulpher trioxide Blue black 4-The effect of heat on copper carbonate CuCO 3 CuO + CO 2 Copper carbonate Copper oxide green black 5-The effect of heat on sodium nitrate 2NaNO 3 2NaNO 2 + O 2 Sodium nitrate sodium nitrite White yellowish white 6-Adding a piece of sodium to water 2 Na + 2 H 2 O 2 NaOH + H 2 + heat Sodium Sodium hydroxide 7-The reaction between zinc and hydrochloric acid Zn + 2 HCl ZnCl 2 + H 2 Zinc Hydrochloric acid Zinc chloride
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