banabana 發問於 科學及數學化學 · 1 十年前

Bunsen burner..急急急急急!!!

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.

3 個解答

評分
  • 1 十年前
    最愛解答

    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.

  • 匿名
    5 年前

    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.

  • 1 十年前

    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-|||

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