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ķīmija
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Atoma sastāvs
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Age 14-15
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level: 8.klasei
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Latvian
Author's Instructions
protoni, elektroni, neitroni, atommasas, kodola lādiņš
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ķīmija
-
Atoma sastāvs
-
Age 14-15
-
level: 8.klasei
-
Latvian
Author's Instructions
protoni, elektroni, neitroni, atommasas, kodola lādiņš