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What is made from only one type of matter and cannot be separated by physical methods? *

Select the correct answer. wax is a nonpolar substance. in which type of substance is it the most soluble?

Which phrase best defines a mountain eee

Which of the following has expanded our knowledge of the universe beyond our solar system the most? a. manned space travel b. the hubble space telescope c. the pioneer and voyager missions d. the international space station