How to light a Bunsen burner?
1.Close the (air hole) by turning the __________________.
2.Light a _______and put the lighted _______over the mouth of the( Bunsen burner).
3.Turn on the _____________and light the gas.
4.Adjust the (flame) by turning the ______________.
Comparing Blue Flame and Yellow Flame
1.Un_________ gas inside this _________cone.
Striking Back
1.Striking back will occur if the burner is lighted with the air hole ___
______________.
2.A ____________ sound will be heard and the flame is __________
in colour.
3.We should _____________________________________________
immediately.
Bunsen burner..急急急急急!!!
2009-09-28 3:45 am
回答 (3)
2009-09-28 4:03 am
✔ 最佳答案
1.Close the (air hole) by turning the collar.2.Light a match and put the lighted match over the mouth of the( Bunsen burner).
3.Turn on the gas tap and light the gas.
4.Adjust the (flame) by turning the collar .
Comparing Blue Flame and Yellow Flame
1.Un burnt gas inside this inner cone.
Striking Back
1.Striking back will occur if the burner is lighted with the air hole fully opened.
2.A loud sound will be heard and the flame is green in colour.
3.We should turn off the gas tap immediately.
2015-11-08 11:17 am
1.Close the (air hole) by turning the collar.
2.Light a match and put the lighted match over the mouth of the( Bunsen burner).
3.Turn on the gas tap and light the gas.
4.Adjust the (flame) by turning the collar.
Comparing Blue Flame and Yellow Flame
1.Unluminus gas inside this flame cone.
Striking Back
1.Striking back will occur if the burner is lighted with the air hole opened.
2.A dizzling sound will be heard and the flame is green
in colour.
3.We should turn off the gas tap
immediately.
2.Light a match and put the lighted match over the mouth of the( Bunsen burner).
3.Turn on the gas tap and light the gas.
4.Adjust the (flame) by turning the collar.
Comparing Blue Flame and Yellow Flame
1.Unluminus gas inside this flame cone.
Striking Back
1.Striking back will occur if the burner is lighted with the air hole opened.
2.A dizzling sound will be heard and the flame is green
in colour.
3.We should turn off the gas tap
immediately.
2009-09-28 3:58 am
1.Close the (air hole) by turning the collar.
2.Light a match and put the lighted match over the mouth of the( Bunsen burner).
3.Turn on the gas tap and light the gas.
4.Adjust the (flame) by turning the collar.
Comparing Blue Flame and Yellow Flame
1.Unluminus gas inside this flame cone.
Striking Back
1.Striking back will occur if the burner is lighted with the air hole opened.
2.A dizzling sound will be heard and the flame is green
in colour.
3.We should turn off the gas tap
immediately.
好遠古的問題……我也不敢肯定對不對-口-|||
2.Light a match and put the lighted match over the mouth of the( Bunsen burner).
3.Turn on the gas tap and light the gas.
4.Adjust the (flame) by turning the collar.
Comparing Blue Flame and Yellow Flame
1.Unluminus gas inside this flame cone.
Striking Back
1.Striking back will occur if the burner is lighted with the air hole opened.
2.A dizzling sound will be heard and the flame is green
in colour.
3.We should turn off the gas tap
immediately.
好遠古的問題……我也不敢肯定對不對-口-|||
參考: 自己
收錄日期: 2021-04-26 14:31:49
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