physical star are formed by chemically 5 need
protostellar_core is not molecular_core. making_sauces is physical_creation_event. silicon_carbide is chemical_compound. chemical_purity is tangible_physical_quantity. fox_7 is chemical_compound. stars is balls_of_burning_gas. group_of_stars is naturally_occurring_tangible_substance. fox_7 is not chemical_compound. protostellar_core is molecular_core. group_of_stars is not naturally_occurring_tangible_substance.