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NEED ANSWERED ASAP FOR TEST PLEASE HELP If a chemical change requires energy, which of the following could be the source of the energy?
Select one:
a. Settling the mixture for 20 minutes
b. Adding more substance to the observed material
c. Measuring mass from a beam balance
d. Heating with a flame

Respuesta :

carlafossil320
d. Heating with a flame, as this would provide thermal energy to the solution/substance

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