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ACT Prep Round 7Subject: Science

Learning Intentions - Today, we will address these College Readiness Standards in Science:

- Interpretation of Data, 20-23

- Scientific Investigation, 20-23

- Interpretation of Data, 24-27

- Evaluation of Models, Inferences, and Experimental Results, 16-19

Success Criteria – I know I am successful when I can translate information into a graph, identify a control in an experiment, compare data from a complex data presentation, and identify implications in an experiment.

Week 34CPW

Please Note

• You have 3 Minutes to read your passage.• You will have 1 minute and 15 seconds to work

on each question individually.• You will have 1 minute and 30 seconds to work

as a group and write your rationales for each answer.

Science#1. In order to display the relationship between concentration and the rate of the reaction more effectively in Experiment 1, the chemist could:A. construct a bar graph of the concentration of

formaldehyde in each trial.B. plot the HCHO concentration against the time required

for the color change.C. plot the change in Na2SO3 and NaHSO3 concentrations in

each trial against the HCHO concentrations.D. produce a table cataloging the differences between the

times for the color changes in successive trials.

Science#2. If Reaction 1 was found to be exothermic (heat producing), how could Experiment 1 be modified to examine only the effect of concentration on reaction rate?A. The concentration of formaldehyde could be

increased.B. A different method could be used to determine the

color change.C. The temperature of the solution could be set to a

constant temperature.D. The temperature of the solution could be increased.

Science#3. The fastest rate of reaction in Experiment 1 occurred when the:A. time for the color change to occur was greatest.B. concentration of NaOH was greatest in the

reaction mixture.C. concentration of HCHO was smallest in the

reaction mixture.D. concentration of HCHO was greatest in the

reaction mixture.

#4. The function of phenolphthalein in both experiments was to:A. signal when the NaHSO3 was gone.

B. signal when the NaOH was gone.C. cause the HCHO solution to react.D. slow down the rate of reaction.

Science

Science CPW

• Repeat the questions with your squad members. Be sure to write a rationale. If you don’t write a rationale, you won’t learn as much. Your brain is like a muscle. Use it!

• 1 minute and 30 seconds per question for Squad Mode.

• After the rationale writing is done, launch the Answers video.