1) The first step is to _____ a hypothesis. a) release b) record c) track d) form 2) I _____ the substance under the microscope. a) got rid b) placed c) recorded d) formed 3) When did you carry _____ the experiment? a) off b) in c) over d) out 4) The substance _____ in the water. a) released b) got rid of c) dissolved d) added 5) The scientists _____ their eating habits over six months. a) tracked b) proved c) rewarded d) submitted 6) We _____ an experiment to test the effects of heat. a) formed b) designed c) dissolved d) placed 7) The action _____ a chemical reaction. a) did b) added c) proved d) created 8) He _____ the results of the experiment. a) looked b) carried out c) analyzed d) placed

Perspectives 3. Workbook. Unit 5A. p.50 Exercise 3

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