Intro to Chem Chapter 1 Wilbraham, Antony C., Dennis D. Staley, Michael S. Matta, and Edward L. Waterman. Prentice Hall Chemistry. 1st ed. Upper Saddle River, NJ: Pearson Prentice Hall, 2008. 1.1 Chemistry What is Chemistry ◦ Chemistry is the study of the composition of matter and the changes that matter undergoes. ◦ Matter is anything that has mass and occupies space Chair, desk, air Why is air considered matter? ◦ Since living and nonliving things are composed of matter, chemistry affects all aspects of life and most natural events. How does chemistry affect your daily life? Branches of Chemistry Five branches of Chemistry ◦ Organic chemistry – study of chemicals containing Carbon. ◦ Inorganic chemistry – chemicals that do not contain carbon in general, mostly found in the non-living ◦ Biochemistry – study of processes that take place in organisms ◦ Analytical chemistry – study the composition of matter ◦ Physical chemistry – study the mechanism, the rate, & energy transfer when matter undergoes changes. Technology Technology is the means by which a society provides its members with those things needed and desired. ◦ Space travel, robotics in the automotive industry & surgical operations, others? Why Study Chemistry? Chemistry can be useful in explaining the natural world, preparing people for career opportunities, and producing informed citizens. 1.1 Section Assessment Page 11 Problems : 1 – 7, omit #3 Scientific Method ◦ Is a logical, systematic approach to the solution of scientific problem. ◦ Steps of the Scientific Method Make observations Why will the lights not turn on? Test hypothesis Hypothesis – is a proposed explanation for an observation. Experiment – procedure that tests the hypothesis Develop theories Theory – well-tested explanation for a broad set of observation. Law – concise statement that summarizes the results of many observations and experiments. Collaboration and Communication ◦ Scientists collaborate and communicate to increase the likelihood of a successful outcome. 1.3 Section Assessment Page 25 Problems: 16 – 25; omit #20.