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Chemistry Chapter 1 Introduction to Chemistry Lesson 1.1 Chemistry Lesson 1.1 Objectives IDENTIFY 5 traditional areas of study in chemistry RELATE pure chemistry to applied chemistry IDENTIFY reasons to study chemistry What is Chemistry? Chemistry is the study of MATTER. Matter is anything that has mass and takes up space. Chemistry is involved in all matters of life and most natural events. Leaves changing color, flavor of Sour Patch kids, soap removes grease, volcanoes on Jupiter’s moon Io. Areas of Study Organic chemistry Inorganic chemistry Biochemistry Analytical chemistry Physical chemistry These 5 areas do not work alone or have fixed boundaries… they overlap most of the time. Organic Chemistry The study of chemicals that contain the element carbon Organic chemists developed medicines to control asthma Inorganic Chemistry The study of chemicals that do not contain the element carbon. Inorganic chemists might study how lack of calcium can affect bone growth. Biochemistry The study of processes that take place in living organisms. A biochemist might study muscle contraction or digestion. Analytical Chemistry The study of the composition of matter. An analytical chemist might study levels of lead in drinking water or levels of chemicals in blood. Physical Chemistry The study of changes in matter. A physical chemist might study factors that affect breathing rate during exercise. Pure and Applied Chemistry Pure chemistry is the pursuit of chemical knowledge for its own sake. Applied chemistry is research that is directed toward a practical goal or application. Pure research can lead to application. An application can exist before research is done to explain how it works. Pure chemistry leads to application… In the early 1900’s, Chemists didn’t understand the structure of cotton or silk. Herman Staudinger, a German chemist, made a hypothesis that these materials contained small units that joined together like a chain. In the 1930’s, another chemist tested the theory and found results that supported this theory. During his research he created materials that don’t exist in nature. One of these is the material we now know as nylon. Application leads to pure discovery… Doctors have been prescribing aspirin for pain relief since 1899. They knew it worked but not why. Research in the 1950’s found that people who took aspirin daily had fewer heart attacks. In 1971, chemists discovered that aspirin blocks the production of a group of chemicals that cause pain. The group of chemicals is also responsible for the formation of blood clots that cause heart attack. Technology The development of nylon, the use of aspirin, and space travel are examples of a system of science called technology. Technology allows humans to do things more quickly and with less effort. Why study chemistry? Explain the natural world… why do apples turn brown? Why does water expand when it freezes? Prepare for a career… A firefighter needs to know what chemicals will put out different kinds of fires. A lawn care specialist needs to understand how different chemicals affect soil and plants. A photographer needs to understand what effect chemicals have on the development of pictures. Being an informed citizen… Who will you vote for? Where do they stand on the issue of funding for different sciences? If no one funded NASA we would not have smoke detectors, heart monitors, or FLAT SCREEN TVs!!!!!!
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