meggskayeb meggskayeb

18-09-2022
Chemistry

Answered

Which of the following is a physical change?

A) Magnesium reduces dry ice, forming black
carbon and MgO.
B) Water forms hydrogen and oxygen gases
via electrolysis.
C) The pH of water is raised by dissolving
sodium hydroxide.
D) Ice forms as water is poured onto dry ice.
E) Water hydrates cobalt chloride, turning
it from blue to pink.

Answer :

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