1. Chapter 1 Introduction to Chemistry

2. What is Chemistry
Chemistry is the study of the composition of matter – the stuff things are made of – and the changes that matter undergoes. Japanese symbol means, “change study”

3. Some things in Chemistry are used practically everyday
Some things in Chemistry are theoretical now, but may become practical tomorrow

4. There are 5 major areas of study:
Organic – the study of essentially all substances containing carbon
Inorganic – specializes on substances that do not contain carbon
Analytical – is concerned with the composition of substances

5. Studies continued…
Physical – is concerned with theories and experiments that describe the behavior of chemicals
Biochemistry – the study of the chemistry of living organisms

6. Why study Chemistry? Chemistry is all around you.
Clothing, home, work, school, nature

7. How do you know a chemical reaction has occurred?
Change in color
Production of a gas
Emission of a light
Change in heat/NRG – gets hot or cold
Production of a precipitate (ppt)

8. Chemistry Far and Wide
Use chemistry to our advantage – produce iron from iron ore, mixtures of brass and bronze, and polymers to plastics, paints, etc.
NRG - Increasing demands means discovering new ways to provide NRG. Chemists are working on alternative fuel sources and developing NRG efficient cars, appliances, etc.

9. Areas where Chemistry is used
Medicine and Biotechnology
Drugs and cures
Agriculture
Food supply and safer pesticides
The environment
Identify pollutants, global warming

10. Areas continued… Astronomy and space exploration
Analyze atmospheres on other planets; geologists learn what types of rocks make up other planets, etc.

11. Thinking Like a Scientist
The Scientific Method
A way of answering questions
Table on page 16 – outlines the steps of the scientific method

12. Scientific Method Observation/Question – Research what you know
Hypothesis – educated guess
Experiment
Collection of Data
Conclusion
Redo experiment

13. Scientific method continued…
Scientific Law is a concise statement that summarizes the results of many observations and experiments.
Natural law – brings together many observations to see the “big picture”
Theory – a model – provides an explanation, can predict the outcome of future experiments.

14. How to Study Chemistry
Understanding and applying concepts
Learn the language of science
Based on facts obtained from making observations and doing experiments

15. How to Study Chemistry continued…
Use your textbook – it is an aid, to get the most out of your reading you should always take notes.
Why? Because by taking notes you retain information better.

16. How to Study Chemistry continued…
Discuss what you learned in class with your friends/get a study buddy. You might understand a concept that you didn’t before or help your friend to understand it better.
So study, write and explain/talk, but not when others are talking.