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Lekce 1
Atoms and elements
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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
vodík
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He
helium
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C
uhlík
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N
dusík
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O
kyslík
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Na
sodík
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Mg
hořčík
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S
síra
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Fe
železo
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Cu
měď
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Ag
stříbro
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Au
zlato
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