laylidee007 laylidee007

26-01-2021
Chemistry

contestada

Which evidence is an indication that a chemical reaction has occurred?
A) melting of a substance
B) formation of a gas
C) boiling of a substance
D) freezing of a substance

Respuesta :

renataalmeidaxm renataalmeidaxm

26-01-2021

Answer:

B

Explanation:

light, heat and gas are evidences of chemical reactions

Answer Link

carlosuribe12 carlosuribe12

13-10-2021

Answer:

b

Explanation:

Answer Link

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