1. Chemistry

2. What is Chemistry? Chemistry is the "scientific study of matter, its properties, and interactions with other matter and with energy".

3. Facts about Chemistry Chemistry and physics are both physical sciences Uses procedures that are systematic and reproducible and its hypotheses are tested using the scientific method. As is true for other sciences, mathematics is an essential tool for the study of chemistry. Scientists that study chemistry are called chemists

4. What is the Scientific Method Method? The Scientific Method is an organized way of figuring something out. There are usually six parts to it. Purpose/Question: What do you want to learn Research: Find out as much as you can. Look for information in books etc. Hypothesis: Predict, guess the outcome Experiment: Design a test or procedure to find out if your hypothesis is correct. Analysis: Record what happened during the experiment. Also known as 'data'. Conclusion: Review the data and check to see if your hypothesis was correct.

5. Variables Independent Variable This is the part of your experiment that you will test (vary) to answer your hypothesis Dependent Variable This is what occurs in response to the changing independent variable. Control The control should be the part of the experiment where you do not include the Independent Variable.

6. Types of Data Continuous: Any variable measured on a continuum or scale that can be infinitely divided. Primary types include time, dollars, size, weight, temperature, speed. Discrete or Attribute: A count, proportion or percentage of a characteristic or category. Binary: Characterized by classifying into only two outcomes. Examples: Pass/Fail, Agree/Disagree, Win/Loss Discrete (Ordinal): Set of finite outcomes usually integers, and is measured by counting. Examples: number of product defects, number errors in an essay

7. Methods of Experimentation Trial and Error One-Factor-At-A Time (OFAT) Design of Experiment (DOE)

8. One-Factor-At-A Time (OFAT) OFAT is simple, the experimental efficiency given up is significant Unnecessary experiment may be run Time to find causal factors is significant Don’t know the effects of changing one factor while factors are changing (no model) In-ability to detect or learn about how factors work together to drive the response (interactions)

9. Design of Experiment (DOE) DOE: The manipulation of controllable factors (independent variables) at different levels to see their effect on some responses (dependent variable) Directed approach, Avoid time wasted with “hunt and peck” (trial and error) Mathematical model relating the variables and responses Model is easily optimized Statistical significance of the results is known Can determine how multiple input variables interact to affect results