How do scientists gather data to find reliable answers to questions?
a. they follow a written procedure for an experiment.
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b. they use the same exact steps as other scientists.
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c. the draw conclusions from the data of other scientists.
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d. they use steps referred to as the scientific method.

Which of the following observations indicates that there is a small, dense, positively charged part in the center of an atom? some uncharged particles are scattered by a gold foil. all uncharged particles are attracted towards a gold foil. all positively charged particles pass straight through a gold foil. some positively charged particles bounce back from a gold foil.