1. Chapter 1 The Nature Of Chemistry

2. 1-1 What is Chemistry? Objectives
1. Explain why a knowledge of chemistry is central to many human endeavors
Chemistry: the study of all matter and the changes they undergo

3. 1-1 The Central Science
Chemistry is call the central science it overlaps so many sciences
Chemistry plays an important role in your life

4. Matter and Characteristics
Matter: has mass and takes up space
Mass: the amount of matter
Weight: mass under influence of gravity

5. 1-2 The Scientific Method
Objectives: List and explain the steps in the scientific method
Tremendous potential of science lies in how information is gathered.
Scientific Method is defined as an orderly and systematic approach to solving problems

6. Observations Qualitative data: physical characteristics
What you observe with senses
Quantitative data: numerical information
What you measure

7. 1-2 Steps in Scientific Method
1. Define the Problem!
2. Propose Hypothesis
3. Collect data, experiment
4. Propose a theory
5. Publish your results

8. 1-2 Scientific Method Independent Variable: what is being tested
Dependent Variable: results from changes in the independent variable
Experimental Control: conditions that are predictable during an experiment

9. 1-2 Laws and Theories
Theory: A statement about the behavior of nature based on data and experimentation
Theories can change or be modified based on new data
Law: A statement about the behavior of nature with no explanation, it is believed to be true
Laws rarely change