Answer:
mixture
Explanation:
there was leftover components meaning there was something mixed into the liquid
<span>In a chemical reaction, a catalyst provides an alternate reaction pathway that has lower activation energy.</span>
Answer:
oxidation-reduction reaction or redox reaction.
Explanation:
If hydrogen gas is passed over heated copper oxide (CuO), the black coating on the surface turns brown as the reverse reaction takes place and copper is obtained
Protons, neutrons, and electrons
