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【简答题】
某些金属及它们的化合物在火焰上灼烧时会使______________________________,这在化学上叫做焰色反应。 2. 焰色反应所需的药品可以是某些金属或它们的______________。 3. 做焰色反应时火焰的颜色最好选用本身颜色较________(填“深”或“浅”)的火焰。 4. 做焰色反应时,一般选用铂丝或镍铬丝或光洁无锈的_______。
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