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Mathematics, 14.12.2021 14:00 lunaandrew332

Which of the following are examples of chemical changes? Barium melts at 725 °C.
Silver tarnishes.
Hydrogen reacts with oxygen to form water.
A sheet of copper is pounded into the shape of a bowl.

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Which of the following are examples of chemical changes? Barium melts at 725 °C.
Silver tarn...

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