Answer:
A precipitate forms; the colour changes.
Step-by-step explanation:
The formation of a precipitate a colour change are always signs that a chemical reaction has occurred.
A, B, C, and D are <em>wrong.</em> They are signs of a reaction, but you did not observe them here.
Answer:
Alphabet C :NADH is oxidized,CO2 is reduced
Answer:
la verdad no se no ablo ingles solo espanis
Answer:
nonmetals. it's one of them
Answer:
Chemistry is the study of matter and how it behaves.
The scientific method is the general process by which we learn about the natural universe.
Explanation:
