Chemistry Far and Wide

Objectives Describe some examples of research in Chemistry Distinguish between macroscopic and microscopic views

Energy Through the study of Chemistry we are able to keep up with the constant demands for energy Chemist study ways to convert plants into fuel. Example: oil from soybeans can be used to make biodiesel Chemist study ways to store energy. Example: batteries and hydrogen fuel cells

Medicine and Biotechnology Chemistry is critical in the research and development of materials doctors use to treat patients. Examples: – medicine such as penicillin or aspirin – Materials for artery transplants and orthopedic surgery – Bacteria producing insulin

Chemistry Far and Wide Chemists design materials to fit specific needs – velcro (Patented in 1955) perfume, steel, ceramics, plastics, rubber, paints, nonstick cooking utensils, polyester fibers Two different ways to look at the world: macroscopic and microscopic

Chemistry Far and Wide Agriculture – Produce the world’s food supply – Use chemistry for better productivity – soil, water, weeds – plant growth hormones – ways to protect crops; insecticides – disease resistant plants

Chemistry and the Environment The Environment – both risks and benefits involved in discoveries – Pollutants need to be 1) identified and 2) prevented (antifreeze) – Lead paint was prohibited in 1978 – Leaded gasoline – Drinking water – carbon dioxide, ozone, global warming

88.2% 440,000 After lead was banned in gasoline and public water supply systems, less lead entered the environment. Let’s examine some information from a graph.

What happened after lead was banned from gasoline?

To study the Universe The Universe – Need to gather data from afar, and analyze matter brought back to Earth – composition of the planets – analyze moon rocks – Meteorites ($$) – planet atmospheres – life on other planets?