Dalton determined that a chemical reaction was simply a(n) of atoms, not the creation of new substances.

"Dalton determined that a chemical reaction was simply a rearrangement of atoms, not the creation of new substances."

John Dalton was an English scientist who proposed the modern atomic model. Dalton recognized that new substances do not arise from nothing during chemical reactions; instead, the new chemical substances formed are due to the recombination of the atoms of the reacting substances. This conclusion is in accordance with the law of conservation of mass.

answer; talc and gypsum;