Difference between revisions of "Flame Test"
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===About Flame Tests=== | ===About Flame Tests=== | ||
| + | : When a [[Metal Compound|metal compound]] is heated by a flame it causes the [[electron]]s in the [[metal]] to gain [[energy]] and move to a higher [[Electron Orbital]]. When they [[electron]]s fall back down to their lower [[Electron Orbital]] some light is given off. Each [[metal]] produces different colours of light. | ||
| + | {| class="wikitable" | ||
| + | |- | ||
| + | | style="height:20px; width:200px; text-align:center;" |'''Metal Compound''' | ||
| + | | style="height:20px; width:200px; text-align:center;" |Lithium | ||
| + | | style="height:20px; width:200px; text-align:center;" |Sodium | ||
| + | | style="height:20px; width:200px; text-align:center;" |Potassium | ||
| + | | style="height:20px; width:200px; text-align:center;" |Calcium | ||
| + | | style="height:20px; width:200px; text-align:center;" |Barium | ||
| + | | style="height:20px; width:200px; text-align:center;" |Copper | ||
| + | | style="height:20px; width:200px; text-align:center;" |Lead | ||
| + | |- | ||
| + | | style="height:20px; width:200px; text-align:center;" |'''Flame Colour''' | ||
| + | | style="height:20px; width:200px; text-align:center;" |Red | ||
| + | | style="height:20px; width:200px; text-align:center;" |Orange | ||
| + | | style="height:20px; width:200px; text-align:center;" |Lilac (Purple) | ||
| + | | style="height:20px; width:200px; text-align:center;" |Orange-red | ||
| + | | style="height:20px; width:200px; text-align:center;" |Brown-green | ||
| + | | style="height:20px; width:200px; text-align:center;" |Green-blue | ||
| + | | style="height:20px; width:200px; text-align:center;" |Blue | ||
| + | |} | ||
| + | |||
| + | ===Method=== | ||
| + | #Dip the end of an [[Inoculation Loop]] into [[concentration|concentrated]] [[Hydrochloric Acid]]. | ||
| + | #Place the end of the [[Inoculation Loop]] into the powdered [[Metal Compound|metal compound]]. | ||
| + | #Hold the end of the [[Inoculation Loop]] in a roaring blue [[Bunsen Burner]] flame. | ||
| + | #Observe and record the colour of the flame. | ||
Revision as of 12:22, 24 January 2019
Key Stage 4
Meaning
Flame Tests are an experiment which can be used to identify the metal elements in a metal compound.
About Flame Tests
- When a metal compound is heated by a flame it causes the electrons in the metal to gain energy and move to a higher Electron Orbital. When they electrons fall back down to their lower Electron Orbital some light is given off. Each metal produces different colours of light.
| Metal Compound | Lithium | Sodium | Potassium | Calcium | Barium | Copper | Lead |
| Flame Colour | Red | Orange | Lilac (Purple) | Orange-red | Brown-green | Green-blue | Blue |
Method
- Dip the end of an Inoculation Loop into concentrated Hydrochloric Acid.
- Place the end of the Inoculation Loop into the powdered metal compound.
- Hold the end of the Inoculation Loop in a roaring blue Bunsen Burner flame.
- Observe and record the colour of the flame.