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Track each student's skills and progress in your Mastery dashboards
​Which is an example of repetition?Â
copying the results of an experiment
doing multiple trials in a experiment to check your results
doing a exhibit to share the results
doing the same experiment as another scientist to compare results
​Which of the following best describes a compound?
a group of substances that are either acids or bases
a substance made of two or more elements chemically combined
a substance made up purely of one element
a group of substances that can be separated by a physical change
Which is an example of repetition?Â
Which of the following best describes a compound?
Which statement best describes scientific theories?
Which of the following changes in the biosphere most likely caused these changes in the atmosphere.
