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共回答了23个问题采纳率：87% 举报
我写一个用镁和氧气做的实验.在我印象里这是我们化学课做的第一个实验.
A ring stand is setup and a crucible is placed on the ring stand.
A bunsen burner is placed under the ring stand and lit.
A strip of magnesium is taken and placed in the crucible.
The strip is oxidized and the flame and ashes are visible.
A ring stand is setup and a crucible is placed on the ring stand.
A bunsen burner is placed under the ring stand and lit.
A strip of magnesium is taken and placed in the crucible.
The strip is oxidized and the flame and ashes are visible.
1年前 追问
9
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你能帮帮他们吗