1. TOPIC I Introduction. What Are Things Made Of and How Do They Change?

2. What is Chemistry? Why is important to study Chemistry
How some creatures can survive deep in the ocean where there is no light? Why some foods taste sweet and some biter?
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3. Peer review and Repeatability of findings.
Natural science
Concerned with the description, prediction, and understanding of natural phenomena, based on observational and empirical evidence.
Aurora,
United States Air Force photo by Senior Airman Joshua Strang.
6 days-peach decomposition
Andrew Dunn, 
Peer review and Repeatability of findings.
Try to ensure the validity of scientific advances.
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4. Chemistry is central to all of the sciences.
Before
Natural sciences
Physical sciences
(non living things)
Biological Sciences
(living things)
CHEMISTRY
Now
All matter consist of chemical structures
Therefore
No divisions between biological and physical sciences

5. Concept: Matter: All things that has mass and occupies space. Study of
CHEMISTRY
Matter: All things that has mass and occupies space.
Concept:
Study of
the composition,
structure,
and properties of
matter,
the process that matter undergo,
and the energy changes
that accompany these process.
% of C
Melting point

6. How do chemists answer the above questions?
Chemistry deals with:
What is a material’s make up?
(compostion, structure)
How does a material change when heated, cooled or mixed with other materials?
(properties)
Why does this behavior occur?
(process and energy involved)
How do chemists answer the above questions?

7. Chemistry greatly impacts our daily lives.
Improvement of health care.
Conservation of natural resources.
Protection of the environment.
Provision of our daily needs for food, clothing, etc.

8. Chemistry greatly impacts our daily lives.
Authenticating Art
Art Conservation

9. Six main branches of Chemistry
Organic Chemistry
Inorganic Chemistry
Analytical Chemistry
Physical Chemistry
Biochemistry
Theoretical Chemistry
These branches often overlap

10. The study of most carbon-containing compounds.
Organic Chemistry
The study of most carbon-containing compounds.

11. Inorganic Chemistry
The study of non-organic substances, many of which have organic fragments bonded to metals (organometallics).
Ethyl alcohol boiling at 78°C
Physical property: boiling point is associated with a phase change. It describes an inherent characteristic of alcohol.
Hardness of a diamond.
Physical property: describes an inherent characteristic of diamond – hardness.
Sugar fermenting to form ethyl alcohol.
Chemical property: describes behavior of sugar – forming a new substance (ethyl alcohol) through a chemical reaction.

12. Physical Chemistry
The study of the properties and changes of matter and their relation to energy.
Analytical Chemistry
The identification of the components and composition of materials.
Biochemistry
The study of substances and processes ocurring in living things.

13. Why to study chemistry?
Should you use hot water or cold water to remove a grease stain from a shirt?
How could you prepare for a career in nursering, firefighting, or journalisim?
If your local goverment wanted to build a solid waste incinerator in your town, what questions would you ask about the project?

14. Three general reason to study chemistry.
1. Explaining the natural world
Cut apple turning brown.
Water expands as it freeze.

15. Three general reason to study chemistry.
2. Preparing people for career oportunities.
Many carrers require the knowledge of chemistry.
Interviewing Chemists
Keeping grass healthy
Which chemicals to use to fight different types of fire.

16. Three general reason to study chemistry.
3. Producing informed citizens.
Would be better spent money on space exploration or cancer research?
Through voting, citizen have a say in the decision their government make. Ex: How much money to provide for scientific research.
Knowledge of Chemistry and other sciences can help you evaluate the data presented, arrive at an informed opinion and take appropriate actions.