CHEMISTRY FAR AND WIDE

Section 1.2

Objectives• Understand and relate the

impact of chemistry (and chemists) on materials, energy, medicine, agriculture, the environment and the study of the universe

IntroductionThe first tools were found objects

such as a stone with a sharp edge. In time, people learned to shape these objects to produce better tools

Chemistry plays a key role in the production of new materials

MAterials• Chemists design materials to fit

specific needs

• There are ways of looking at the world:–Macroscopic–Submicroscopic

Macroscopic View of Matter

• Large enough to be seen• You can touch, feel, smell, taste

and see

Submicroscopic View of Matter

• Is a world so small that you cannot see

• You enter the world of atoms

Energy• Chemists play an essential role in

finding ways to conserve energy, produce energy and store energy

Conservation:One of the easiest ways to conserve energy is through the use of insulation

Recall: Insulator Material that does not aloud transferring heat and electricity

Production:Sources to produce energy can be burning coal, petroleum, natural gas, …

What is biodiesel? Where can we use it?

Storage:Batteries are devices that use chemicals to store energy that will be released as electric current when the batteries are working.Vary in size, power, operation hours, …

Where can we use batteries?

Medicine and Biotechnology

• Chemistry supplies the medicines, materials and technology that doctors to treat their patients

Medicine and Biotechnology

• Medicines: antacids, aspirin, … Knowledg of the structure and function of chemicals help a chemist design safe and effective drugs

• Biotechnology: produce chemicals of importance to humans, such as insulin, therapy to treat some diseases, …

Agriculture

• Chemists help to develope more productive crops and safer, more effective ways to protect crops

• Chemists can help agtroculture by studying soil, protect crops, plague control, …

The Environment

• Chemists help to identify pollutants and prevent pollution

• Chemists help to identify pollutanst and determinie a treatment to heal the environment, as well as prevent damages.

The Universe

• To study the universe, chemists gather data from distant places and analyze matter taht is brought back to Earth

• Wtih the help from NASA, chemists study matter from other bodies in the solar system