OAE Middle Grades Science (029) | 80 Questions | 100% Correct Answers

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Which of the following compounds is not allowed in a school laboratory because it is a potential carcinogen? A: lead B: benzene C: aspartame D: methanol - ✔✔B A laboratory experiment require... s that red blood cells be separated from the serum in whole blood. Which of the following laboratory techniques would be most appropriate for this task? A: spectroscopy B: sublimation C: microscopy D: centrifugation - ✔✔D Which of the following quantities is the largest in the metric system of measurement? A: 10 decimeters B: 100 milligrams C: 100 grams D: 1 decagram - ✔✔C In an experiment on respiration, carbon dioxide production is measured over time. Placing the data in a chart is A: a visual representation of the data B: a conclusion based on the data C: the raw data D: a comparative analysis of the data - ✔✔A In order to be included in the formation of a scientific conclusion, evidence must be A: Quantitative B: Reproducible C: Obvious D: All of the above - ✔✔B A researcher is studying the response of bacteria to a certain chemical. In three experiments , the bacteria swim towards the chemical, and in one experiment the bacteria swim away from it. What would be the most appropriate next step for researchers? [Show More]

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