You are working with an artist who has been commissioned to make a sculpture for a big city in the eastern United States. The artist is wondering what material to use to make her sculpture because she has heard that acid rain in the eastern United States might destroy it over time. You take samples of granite, marble, bronze, and other materials, and place them outdoors for a long time in the big city. You periodically examine the appearance and measure the mass of the samples. (a) What observations would lead you to conclude that one or more of the materials are well- suited for the sculpture?

Video transcript

Hey everyone were asked which of the following statements are true. Starting with a. We have changes in physical appearance indicate that the material underwent chemical change, but not a physical change. The statement is going to be false and we can fix this by removing our but not and changing it to an end. Since changes in physical appearance indicate a chemical and a physical change. Looking at B. We have changes in color and texture indicate that the material underwent a chemical change. This statement is going to be correct and it looks like B is going to be our answer since it is true. But let's go ahead and look at C. And D. For C. We have changes in mass indicate that the material underwent a physical change, but not a chemical change. Again, changes in mass indicate a physical change and a chemical change. So this statement is false for D. We have changes in appearance and mass indicate that the material underwent physical change, but not a chemical change. The statement is also false because changes in appearance and mass indicate a physical and a chemical change. So I hope this made sense. And let us know if you have any questions