Understanding the Scientific Method: Lab 2 Study Guide

CHEM101L_LAB_V5 | Lab 2: The Scienti:c Method Question 1 Correct 1.40 points out of 1.40 Question 2 Correct 1.40 points out of 1.40 Started on Friday, December 1, 2023, 3:43 PM State Finished Completed on Friday, December 1, 2023, 3:49 PM Time taken 6 mins 3 secs Grade 14.00 out of 14.00 ( 100 %) All of the following are rules which must be followed during an experiment except: Select one: a. The experiment must be replicable over several trials b. There must always be quantifiable data c. Only one variable can be tested at a time d. There must always be a control True or false: A testable question asks how the independent variable has an effect on the dependent variable. Select one: a. True b. False My Account

Question 3 Correct 1.40 points out of 1.40 Question 4 Correct 1.40 points out of 1.40 Question 5 Correct 1.40 points out of 1.40 Suppose you conduct one experiment and find that the E = mc , rather than the historically accepted formula, E = mc . What should you do next? Select one: a. Test a new variable. b. Repeat the exact same procedure. c. Share your findings. d. Apply your results to a new experiment. What does experimental data help reveal? Select one: a. The quantitative information b. The qualitative information c. The precision of the experiment d. All of the above True or false: A testable question asks something that can be measured and observed through experimentation. Select one: a. True b. False 3 2

Question 6 Correct 1.40 points out of 1.40 Question 7 Correct 1.40 points out of 1.40 Which of the following are benefits of repeated trials? Select one: a. A conclusion can be drawn from the data b. A decision can be made whether the results supports or contradicts the prediction c. Allows the scientist to see whether the results of a trial, as a whole, show consistency d. All of the above How many independent variables can be tested during any single experiment? Select one: a. 1 b. 3 c. 5 d. 7

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Question 8 Correct 1.40 points out of 1.40 Question 9 Correct 1.40 points out of 1.40 A study is being done to test the effects of habitat space on the size of fish populations. Different sized aquariums are set up with six goldfish in each one. Over a period of six months, the fish are fed the same type and amount of food. The aquariums are equally maintained and cleaned throughout the experiment. The temperature of the water is kept constant. At the end of the experiment the number of surviving fish are surveyed. What is the independent variable? Select one: a. The different sized aquariums b. The number of surviving fish c. The amount of food that the fish received d. The water temperature What is the purpose of a controlled variable? Select one: a. To determine the effect of a new variable on a system. b. To influence a system in a predetermined way. c. To alter a system in an unknown way. d. To include a variable that could influence experimental results, but is not related to the hypothesized change.

© 2023 StraighterLine. All rights reserved Question 10 Correct 1.40 points out of 1.40 The mathematical comparison between your experimental results and a known value is known as a Select one: a. Percent error b. Actual error c. Percent of accuracy d. Percent of inaccuracy Quiz navigation Show one page at a time Finish review 1 2 3 4 5 6 7 8 9 10

CHEM101L Lab Exam 2

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