Seudónimo Seudónimo

13-11-2020
Chemistry

contestada

Which observation is the best indication that a chemical reaction has occurred?

A. Change in temperature

B. Presence of ashes

C. Change from liquid to gas

D. Absence of fizzing

Respuesta :

tgpage0412 tgpage0412

14-11-2020

Answer:

B: Presence of ashes

Explanation:

Burning molecules turns them into other molecules

Answer Link

Aleahramirez Aleahramirez

22-12-2020

Answer:B

Explanation:

Answer Link

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