Chemistry- Analysing Substances (Further) 0.0 / 5 ? ChemistryAnalysing substancesTesting for IonsGCSEEdexcel Created by: Abbs ReynoldsCreated on: 20-03-14 20:39 What does chemical analysis used for? Blood tests, monitior general health, can diagnose diseases. Police, alcohol content. Water companies, anaylising tap water for dangerous chemicals. 1 of 11 What does qualitative tell you? What is present 2 of 11 What does quantative tell you? How much is present 3 of 11 What do you use to test for positive ions and what does it give? NaOH to give a coloured precipitate 4 of 11 What colours do calcium, copper, iron (Fe2), iron (Fe3), aluminium and ammonium? calcium WHITE, copper BLUE, iron (Fe2) GREEN, iron (Fe3) BROWN, aluminium WHITE->COLOURLESS and ammonium AMMONIA (when heated) 5 of 11 What acid and nitrate do you use to test for halides? Nitric acid and Silver Nitrate. 6 of 11 What does chloride give? White precipitate wof silver chloride. 7 of 11 What does bromide give? A cream precipitate of silver bromide. 8 of 11 What does iodide give? A yellow precipitate of silver iodide. 9 of 11 What does sulfates using hydrocloric acid and barium chloride give? white precipitate of barium sulfate 10 of 11 Test for carbonates using dilute acid gives off..? CO2 gas, which will turn limewater milky/cloudy. 11 of 11
Comments
No comments have yet been made