daijalivingston
daijalivingston daijalivingston
  • 01-05-2018
  • Physics
contestada

1) Which is NOT a way to know if a CHEMICAL change has occurred?
A. Heat is absorbed or released
B. Phase change occurs
C. New color
D. New substance is Made
2) Is CO2 a reactant or product?
3) is O2 a reactant or product?
(2 and 3 are combined i just made them two separate questions)

Respuesta :

akintunde12p7nyz7 akintunde12p7nyz7
  • 03-05-2018
I think its B because there is no chemical change when a phase change occurs
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