Chemistry, 30.10.2020 19:20 Geo777

Which of the following is an example of a physical change? A. Sulfur combined with oxygen produces sulfur dioxide
B. Iron exposed to air produces rust.
C. Hydrogen combined with oxygen forms water
D. Liquid nitrogen exposed to air becomes nitrogen gas.

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Which of the following is an example of a physical change? A. Sulfur combined with oxygen produces...