Welcome to the World of Chemistry

The Language of Chemistry CHEMICAL _____________ -CHEMICAL _____________ - –pure substances that cannot be decomposed by ordinary means to other substances. Sodium Bromine Aluminum

The Language of Chemistry The elements, their names, and symbols are given on the PERIODIC TABLEThe elements, their names, and symbols are given on the PERIODIC TABLE How many elements are there?How many elements are there? 117 elements have been identified 82 elements occur naturally on Earth 82 elements occur naturally on Earth Examples: gold, aluminum, lead, oxygen, carbon 35 elements have been created by scientists35 elements have been created by scientists Examples: technetium, americium, seaborgium

The Periodic Table Dmitri Mendeleev ( )

Glenn Seaborg ( ) Discovered 8 new elements.Discovered 8 new elements. Only living person for whom an element was named.Only living person for whom an element was named.

Branches of Chemistry Many major areas of study for specializationMany major areas of study for specialization Several career opportunitiesSeveral career opportunities Also used in many other jobsAlso used in many other jobs

1. Organic Chemistry Organic is the study of matter that contains carbonOrganic is the study of matter that contains carbon Organic chemists study the structure, function, synthesis, and identity of carbon compoundsOrganic chemists study the structure, function, synthesis, and identity of carbon compounds Useful in petroleum industry, pharmaceuticals, polymersUseful in petroleum industry, pharmaceuticals, polymers

2. Inorganic Chemistry Inorganic is the study of matter that does NOT contain carbonInorganic is the study of matter that does NOT contain carbon Inorganic chemists study the structure, function, synthesis, and identity of non- carbon compoundsInorganic chemists study the structure, function, synthesis, and identity of non- carbon compounds Polymers, MetallurgyPolymers, Metallurgy

3. Biochemistry Biochemistry is the study of chemistry in living thingsBiochemistry is the study of chemistry in living things Cross between biology and chemistryCross between biology and chemistry Pharmaceuticals and geneticsPharmaceuticals and genetics

4. Physical Chemistry Physical chemistry is the physics of chemistry… the forces of matterPhysical chemistry is the physics of chemistry… the forces of matter Much of p-chem is computationalMuch of p-chem is computational Develop theoretical ideas for new compoundsDevelop theoretical ideas for new compounds

5. Analytical Chemistry Analytical chemistry is the study of high precision measurementAnalytical chemistry is the study of high precision measurement Find composition and identity of chemicalsFind composition and identity of chemicals Forensics, quality control, medical testsForensics, quality control, medical tests