Which of the following represents a chemical change?
1. rocks being smoothed by rapid water mov...
Social Studies, 05.05.2020 12:35 juanitarodrigue
Which of the following represents a chemical change?
1. rocks being smoothed by rapid water movement
2. the pink color of a rose
3. irons attraction to a magnet
4. decomposed of stone due to acid rain
Answers: 3
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Which statement is correct? the speed of the light ray is the same in air and medium a. the speed of the light ray is the same in air and medium b. medium a and medium b have different densities because light refracts at different angles. medium a and medium b have the same density because the light ray strikes both at the same angle.
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