Chemistry

Chemistry is the study of the composition of matter and the changes that matter undergoes

Matter is

The 5 traditional areas of study◦ Organic chemistry – chemicals containing carbon

◦ Inorganic chemistry – chemicals that do not contain carbon

◦ Biochemistry – processes in organisms

◦ Analytical chemistry – composition of matter

◦ Physical chemistry – mechanism, rate and energy when matter undergoes a change

Pure Chemistry – when a scientist pursues knowledge just to gain the knowledge

Applied Chemistry – when a scientist directs his research toward a goal.

Chemists aid in conserving, producing and storing energy.

Chemistry supplies medicine, material and technology for doctors.

Chemistry plays an important role in agriculture◦ Jellyfish gene in potatoes

Chemistry identifies pollutants in the air and finds ways to prevent pollution.

Chemistry stems from alchemy

◦ Alchemist searched for a way to turn other metals into gold

◦ They also searched for the elixir of life

Alchemist developed tools and techniques used in chemistry

From the begining

Antoine-Laurent Lavoisier (sometimes referred to as the father of chemistry) transformed chemistry from an observation to a measurement science.

1. State the problem2. Collect information3. Form a hypothesis4. Test hypothesis5. Make observations6. Record and study data7. Draw a conclusion

The Scientific Method

Theory vs. Law

Theory – well-tested explanation. A theory can be changed if new information arrises

Law – statement that summarizes the results of many observations. Does not explain the relationship

Parts of an experiment

◦ Manipulated variable – variable you change during experiment (independent variable)

◦ Responding variable – variable that is observed during the experiment (dependent variable)

Scientist collaborate and communicate often

The more they collaborate the better their outcomes will be.

Graphs

Title on graph

Appropriate labels on each axis and units

Graphs