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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