How might an investigator distinguish various substances? cite specific examples.

use r. a.c. e.s. (restate, answer, cite, explain, summarize) when answering the question.

This active feature of earth's crust in building mountain ranges as well as islands. this feature is a a) cavern. b) earthquake. c) mountain. d) volcano.

Calculate the number of moles of ethane in 100 grams

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.