Write True or False. 1. Atoms are the building blocks of matter [_________] . 2. Molecules made up of only the same kinds of atoms . [_________]. 3. When heated, atoms move faster. [___________]. 4. All substances undergo melting in normal conditions . [_________] . 5 . Solids expand on heating . [__________] .
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1. true
2. true
3. true
4. false
5 . true
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