Explore / Lower secondary (ages 11–14) / Science / The periodic table
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- Groups and periodsNew: questions are written when you open itNew
- Metals and non-metalsNew: questions are written when you open itNew
- Group 1 alkali metalsNew: questions are written when you open itNew
- Group 7 halogensNew: questions are written when you open itNew
- Group 0 noble gasesNew: questions are written when you open itNew
- Dmitri MendeleevNew: questions are written when you open itNew