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Use examples from the article to explain one positive and one negative effect that chemistry has had on society.

The formation of a solid, also known as a is an indication of a chemical change. precipitate particulate particle powder

The famous scientist galileo galilei did several experiments with sloping planes, which he rolled metal balls down so that he could study motion. by changing the slope, he could study how the speed at which the ball rolled was affected. what was the independent variable in galileo's experiment? a. the speed of the ball b. the slope of the plane c. whether the ball moved d. what the ball was made of