Which of the following proceducers involoves a physical change in one of the

label Chemistry
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substances

allowing a nail to rust 

building a model rocket propelled by mixing baking soda and vinegar 

creating salt by reacting sodium metal and chlorine gas

seperating a salt solution by evaporting the water 

Oct 3rd, 2015

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creating salt by reacting sodium metal and chlorine gas,.......................


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Sep 20th, 2015

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Oct 3rd, 2015
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