Lab 1_1003004_Ayfv33GRT.pdf - Observing and Inferring I...

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Observing and Inferring I Semester 1, Unit 1 LAB 1: OBSERVING AND INFERRING NOTE TO STUDENTS: This is a dry lab. You are only expected to perform the portions of this lab that do not require you to use laboratory equipment or supplies. When appropriate, sample data may be supplied in the lab's data tables to help ou answer the uestions. Goals You are already an inference maker. The goal of this lab is to show you how to formalize your inferences Materials and Equipment 0.1M HCI (an acid) 0.1M KOH (a base) Bromothymol blue (BTB) Goggles Ruler with mm markings Materials Not Included Paper towels Introduction Inference (noun): A conclusion reached upon the basis of evidence and reasoning. Synonyms: Deduction, conclusion, reasoning, conjecture, speculation, guess, presumption, assumption, supposition, reckoning, extrapolation. Everyone often uses inferences. If someone comes in from outside and is all wet, you might infer that it is raining outside. You see a trash can rolling down the road and you might infer it is windy outside. Sometimes we use inferences to predict something. For example, you see dark rolling clouds. You might infer that it is going to rain. if you see the numbers 2, 4, 6, and 8, and you had to infer what number would come next in the pattern, you would predict 10. Inferences are even used in the sciences. For instance, a meteorologist (scientist who studies weather and climate) might gather data and, based on that data, and infer there is a high chance of rain. While inferences are in a way, an educated guess, they can be used to help guide us into greater scientific truth.