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课程 1
Atoms and elements
📖 课程
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🎯 测验——选择翻译
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✅ 本课已完成
Everything around us — the table, water, you — is made of tiny particles called atoms. There are different kinds of atoms: the chemical elements. Each has a symbol: H is hydrogen, O is oxygen.
🧪 The periodic table collects all 118 known elements — the alphabet of the universe.
H
氢
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He
氦
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C
碳
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N
氮
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O
氧
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Na
钠
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Mg
镁
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S
硫
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Fe
铁
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Cu
铜
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Ag
银
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Au
金
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