Please can you give me what are the products , the colour of the flame, how does it react when :
1- Zinc reacting with oxygen
Zinc reacting with air
2- Iron filings with oxygen
Iron filings with air
3- Copper reacting with oxygen
Copper reacting with air
4- Magnesuim reacting with oxygen
Magnesuim reacting with air
From now on, please put the SUBJECT in the Subject line. Then the right teachers will get to your question faster.
Since this is not my area of expertise, I searched Google under the key words "flame test elements" to get these possible sources:
http://webmineral.com/help/FlameTest.shtml
http://en.wikipedia.org/wiki/Flame_test
http://chemistry.about.com/library/weekly/aa110401a.htm
http://chemistry.about.com/od/chartstables/Chemistry_Charts_Tables.htm
Although it has been decades since I have taken chemistry, the elements would result in their oxide (e.g., zinc oxide).
I hope this helps. Thanks for asking.
1- Zinc reacting with oxygen:
When zinc reacts with oxygen or air, it forms zinc oxide (ZnO). The reaction can be represented by the chemical equation:
2Zn + O2 -> 2ZnO
Zinc oxide does not produce a colored flame when heated.
2- Iron filings with oxygen:
When iron reacts with oxygen or air, it forms iron(III) oxide (Fe2O3). The reaction can be represented by the chemical equation:
4Fe + 3O2 -> 2Fe2O3
Iron(III) oxide produces a reddish-brown flame when heated.
3- Copper reacting with oxygen:
When copper reacts with oxygen or air, it forms copper oxide (CuO). The reaction can be represented by the chemical equation:
2Cu + O2 -> 2CuO
Copper oxide does not produce a colored flame when heated.
4- Magnesium reacting with oxygen:
When magnesium reacts with oxygen or air, it forms magnesium oxide (MgO). The reaction can be represented by the chemical equation:
2Mg + O2 -> 2MgO
Magnesium oxide does not produce a colored flame when heated.
To determine the color of flames produced by various elements, a flame test can be performed. In a flame test, a small amount of the compound containing the element is introduced into a flame. The characteristic color of the flame is then observed. However, in the case of the reactions mentioned above, the compounds formed do not exhibit any specific color in the flame.