Web26 jul. 2024 · Flame tests and chemical tests are used to detect and identify ions in samples. Instrumental methods of analysis are faster, more accurate and more sensitive … WebTesting for carbonate ions Carbonate ions, CO 32- are detected using any dilute acid (e.g. hydrochloric acid). Bubbles of carbon dioxide gas will be given off when an acid is added. We can pass the gas through limewater and if it turns the limewater cloudy it will confirm the gas is carbon dioxide. Testing for sulfate ions
Metal hydroxide precipitate tests - Analysing substances - AQA
Web21 nov. 2024 · Flame tests and chemical tests are used to detect and identify ions in samples. Instrumental methods of analysis are faster, and more accurate and sensitive … Web4 mrt. 2024 · hydroxide ions cause solutions to be alkaline. Candidates are reminded to include the charge on an ion as OH did not score. In a(iii) many candidates scored 3 marks for correct observations during the reaction of sodium and water. Candidates need to be careful to record observations: gas formed did not score as it is not an observation but chantal bublot
Identifying Ions - GCSE Science Required Practical - YouTube
Web27 dec. 2024 · Flame Tests for Metal Ions - GCSE Chemistry Revision Electronic Structure Electronic Structure Quiz History of the Periodic Table History of the Periodic Table Quiz The Periodic Table The Periodic Table Quiz Metals and Non-metals on the Periodic Table Metals and Non-metals on the Periodic Table Quiz Transition Metals Transition Metals Quiz Web9 Jan 2024**CORRECTION** 2:33 lead hydroxide is SOLUBLE in excess sodium hydroxide because lead hydroxide is amphoteric, and it further reacts with hydroxide... Web11 feb. 2024 · Tests for ions produced mixed answers in (b). The test for the lithium ion was generally confidently answered, with candidates naming a flame test, or describing it correctly. Examiners were expecting to see red or crimson as the colour of the flame.As with other questions on colours, examiners will usually ignore qualifying words like “dark ... chantal b sweat