Chemicals' rhymes with:
arbuckles, articles, barnacles, hypotheticals, medical's, miracles, obstacles, oracle's, oracles, ossicles, particles, radicals, spectacles, tentacles
Chemicals' sounds like:
cancels, cangelosi, cangialosi, chemical's, chemicals, chimicles, conceals, congolese, consol's, consoles, council's, councils, counsel's, counsels