Year 10 Textbook

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St. Mary’s College Science DepartmentYear 10 ScienceMaking SaltsMethod 1 - Reacting acid with metal to make a salt1. Place 5 test tubes in a test-tube rack and fill each one half full withdilute Hydrochloric acid.2. Place a small sample of each of the metals in the test-tubes – onemetal for each test-tube… magnesium, zinc, iron, tin and copper.3. Observe any changes.4. Put your results in a table like this one…Name of metalMagnesiumZincIronTinCopperReaction with acidYou may have noticed that a gas came out of some of the test-tubes where areaction took place.You can test to confirm which gas this is by lighting a splint and holding it nearthe opening of the test-tube as the gas escapes. You can see this on the nextpage.108
St. Mary’s College Science DepartmentYear 10 ScienceTesting for Hydrogen GasThere is a very simple test to confirm if a gas is actually Hydrogen.Simply collect some of the gar as it comes out of the test-tube (of metal andacid) and then, still holding the test-tube of gas upside-down, hold a lightedsplint at the opening. If it is Hydrogen gas, you will hear a squeaky pop.There is also a slightly more complicated way to collect Hydrogen gas whichyour teacher might show you.109
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Year 10 Textbook

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