Introduction to Chemistry Chapter 1 Warmup 82813 List

Introduction to Chemistry Chapter 1

Warmup 8/28/13 List your ideas about the field of chemistry! � Prompt � What Questions: do you think it studies? � What do you think “doing chemistry” means? � What experiences have you had with chemistry?

Objective ch 1 �I can… �define chemistry and list its 5 divisions. �Distinguish between pure and applied chemistry �Distinguish a theory vs. a scientific law

List some uses of chemistry in our daily lives

What is Chemistry really? �Chemistry is defined as the study of matter and the changes that matter undergoes. �Prompt �What Questions: is matter? �Is anything NOT matter? �What is an example of matter changing?

II. The 5 Major Subdivisions of Chemistry Organic chemistry A. � - study of all substances that contain the element carbon Why is carbon so unique or important? Inorganic chemistry B. � - study of all substances that do not contain carbon

II. The 5 Major Subdivisions of Chemistry Analytical chemistry C. � - study of the composition of substances (ex. C. S. I. ) Physical chemistry D. � - theories and experiments on the behavior of chemicals Biochemistry E. � - study of all chemistry in living organisms

III. Applied and Pure Chemistry Chemical knowledge for the simple sake of knowing it is called pure chemistry. Chemical technology that is either beneficial or harmful to people is referred to as applied chemistry. You must have pure chemistry in order to have applied chemistry.

III. Applied and Pure Chemistry Determine which of the following examples are pure chemistry and which are applied chemistry. a. b. c. d. developing a shampoo designed for dry or damaged hair figuring out the general structure of cotton or wool designing a large scale way to manufacture plastics explaining why water expands when it freezes

VI. Theory and Law An explanation that ties together all of the facts about something and allows us to make predictions is called a theory. It is supported by evidence but NOT proven. • Theory of Evolution ties together everything we have learned through genetics, fossil records, and direct observations of species’ changing. It allows us to predict how species will change under certain conditions and is as close to the truth that science can be.

VI. Theory and Law A summary of a set of observations that does not attempt to explain why we observe what we do is called a scientific law. Laws describe the world around us, but give no reason why the world is the way it is. � The Law of Gravity says that any object with mass is attracted to all other objects that have mass. This law is a good description of what we see happen, but doesn’t attempt to explain why it happens.

VI. Theory and Law � Determine whether each of the following statements is an example of a scientific theory (T) or a scientific law (L). a. For every action, there is an equal and opposite reaction. � b. The Earth revolves around the Sun. � c. Due to gravitational energy waves, the Moon revolves around the Earth. � d. Mass cannot be created from nothing or destroyed into nothing. � e. There is a strong connection between nutrition and various types of cancer. �

Objective �Define ch 1 chemistry and list its traditional divisions �List reasons to study chemistry, and how it affects our lives �Distinguish between a theory and a scientific law