Introduction to Chemistry Considered central science of biology, physics, medicine, and geology. Physics Geology Biology Medicine Chemistry.

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Introduction to Chemistry Considered central science of biology, physics, medicine, and geology. Physics Geology Biology Medicine Chemistry

Medicine Acetylsalicylic acid History 5 th Century BC, Hippocrates discovered powder derived from willow bark that eased aches and reduced fevers. Remedy found in ancient writings from Sumeria, Egypt, and Assyria. Native American Indians used it for headaches, fevers, sore muscles, rheumatism, and chills Leroux and Piria isolated and identified it in its purest crystalline form. Bayer found the derivatized form removed the negative side effects and began to mass produce it. Medicinal Chemistry Combination of chemistry and pharmacy to design and develop pharmaceutical drugs. Process of Drug Discovery Discovery Optimization Development *

* Physics Molecular Modelling (or Computational Chemistry) provides insight to the structure of proteins. Why is this important?

Geology * Polar Ice Caps Elemental Analysis - Dan Brown’s Deception Point

Chemistry plays an essential role in everyday life & Chemistry 130 is the foundation of the world of Chemistry !

The Scientific Method “No amount of experimentation can ever prove me right: A single experiment can prove me wrong” - Albert Einstein Robert Boyle (in 1661) published The Skeptical Chymist and his principles led to the development of the scientific method

I. State the problem Collect data and make observations. Quantitative Vs. Qualitative II. Formulate Hypothesis Organize, analyze, and evaluate collected facts. III. Perform Experiments – Be Skeptical! Do these experiments agree with the hypothesis? yes – no - IV. Develop New Hypothesis Combine all hypotheses & observations and once they all agree a theory can be developed. Theory: Sometimes called a model, is an interpretation of why something occurred. The Scientific Method: A systematic method based upon observable facts.

The hypothesis will become a theory if more experiments are Done that further support the second hypothesis.

What is the difference between a theory and a law ? A theory is an explanation of behavior Whereas a law is a summary of observable facts. Law of Conservation of Mass In a chemical reaction matter is neither created nor destroyed. Dalton’s Atomic Theory All matter is composed of small, indestructible particles called atoms. (John Dalton ) Ask yourself – Is the proposed measurable? YESLaw NOTheory

A Beginning Chemist: How to Succeed Curiosity Commitment Practice, Practice, Practice!

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