1. CHEMISTRY FAR AND WIDE Section 1.2

2. Objectives Understand and relate the impact of chemistry (and chemists) on materials, energy, medicine, agriculture, the environment and the study of the universe

3. Introduction The 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

4. MAterials Chemists design materials to fit specific needs There are ways of looking at the world: – Macroscopic – Submicroscopic

5. Macroscopic View of Matter Large enough to be seen You can touch, feel, smell, taste and see

6. Submicroscopic View of Matter Is a world so small that you cannot see You enter the world of atoms

7. Energy essential role Chemists play an essential role in finding ways to conserve energy, produce energy and store energy

8.  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

9.  Production: Sources to produce energy can be burning coal, petroleum, natural gas, … What is biodiesel? Where can we use it?

10. S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?

11. Medicine and Biotechnology Chemistry supplies the medicines, materials and technology that doctors to treat their patients

12. 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, …

13. 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, …

14. The Environment prevent pollution Chemists help to identify pollutants and prevent pollution identify pollutanstdeterminie a treatment prevent damages Chemists help to identify pollutanst and determinie a treatment to heal the environment, as well as prevent damages.

15. 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