| http://www.w3.org/ns/prov#value | - hen the temperature decreases endothermic ??? ??? ??? atoms, hydrogen, carbon, oxygen, diamonds, graphite, gold, and helium examples of elements ??? ??? ??? molecules, CO2 (carbon dioxide), H2O (water), (di-hydrogen oxide), NaCl (salt), C12H22O11 (sodium clouride), (sucrose) (sugar) examples of compounds ??? ??? ??? copper and zinc, iron and salt examples of mixtures ??? ??? ??? vinegar, saltwater
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