Whether the species remaining in this sacrament can change external objects?

❌ Objection 1 : It seems that the species which remain in this sacrament cannot affect external objects. For it is proved in Phys. vii, that forms which are in matter are produced by forms that are in matter, but not from forms which are without matter, because like makes like. But the sacramental species are species without matter, since they remain without a subject, as is evident from what was said above (Article [1]). Therefore they cannot affect other matter by producing any form in it.

❌ Objection 2 : Further, when the action of the principal agent ceases, then the action of the instrument must cease, as when the carpenter rests, the hammer is moved no longer. But all accidental forms act instrumentally in virtue of the substantial form as the principal agent. Therefore, since the substantial form of the bread and wine does not remain in this sacrament, as was shown above (Question [75], Article [6]), it seems that the accidental forms which remain cannot act so as to change external matter.

❌ Objection 3 : Further, nothing acts outside its species, because an effect cannot surpass its cause. But all the sacramental species are accidents. Therefore they cannot change external matter, at least as to a substantial form.