Flame test - Wikipedia
A flame test is relatively quick test for the presence of some elements in a sample. The technique is archaic and of questionable reliability, but once was a component of qualitative inorganic analysis .
Flame Test Colors and Procedure (Chemistry) - Science Notes and …
2022年6月15日 · Options for the flame include a candle flame, Bunsen burner flame, or gas flame. Basically, you dip a wire or splint into a solid sample or its solution and expose the sample to a colorless flame. Viewing the results through a cobalt blue glass filters out excess yellow and makes identification a bit easier.
Flame Test - Chemistry LibreTexts
Cobalt glass (Co(s)) is a blue glass useful for masking yellow (sodium) emission. This can be especially useful for identifying elements that weakly emit blue and/or violet. Liquids or solids can be tested simply by introducing the sample into the flame. Whatever instrument is used to introduce the sample must impart no color itself.
Flame Test Colors: Photo Gallery - ThoughtCo
2024年9月24日 · Blue is tricky because it's the usual color of a methanol or burner flame. Other elements that can impart a blue color to a flame test are zinc, selenium, antimony, arsenic, lead, and indium. Plus, there are a host of elements that don't change the color of a flame.
Flame Tests - Chemistry LibreTexts
2023年6月30日 · Flame tests are used to identify the presence of a relatively small number of metal ions in a compound. Not all metal ions give flame colors. For Group 1 compounds, flame tests are usually by far the easiest way of identifying which metal you have got.
How Flame Test Colors Are Produced - ThoughtCo
2024年7月23日 · For example, copper (I) emits blue light during the flame test, while copper (II) emits green light. A metal salt consists of a component cation (the metal) and an anion. The anion can affect the result of the flame test.
How to Do a Flame Test for Qualitative Analysis - ThoughtCo
2020年6月3日 · The flame test is a qualitative test in analytical chemistry used to help identify the composition of a sample. The premise is that heat gives energy to elements and ions, causing them to emit light at a characteristic color or emission spectrum.
Flame Test | Explanation, Definition, Information & Summary
2019年10月14日 · It is widely used to detect and analyze the presence of certain elements in the given salt or compound. Primarily, the flame test detects the presence of metal ions in a compound, and as ions of each element have a specific characteristic based in their emission spectrum, the flame test for every element is different and distinctive.
Tests for ions - Edexcel Flame tests for metal ions - BBC
Flame tests and chemical tests are used to detect and identify ions in samples. Instrumental methods of analysis are faster, and more accurate and more sensitive than simple...
Flame Test - Chemistry LibreTexts
2020年8月15日 · The propane torch is a fire hazard, so a blue, flame resistant lab coat should be worn by the demonstrator. Keep flame pointed away from flammable material. SOP: N/A. Disposal (by Storeroom) All chemicals, except the copper chloride and strontium chloride, can be dissolved in water and flushed down the drain.