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Chemistry

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									         Chemistry
Chapter 1 Introduction to Chemistry
       Lesson 1.1 Chemistry
 Lesson 1.1 Objectives
IDENTIFY 5 traditional areas of study in chemistry

RELATE pure chemistry to applied chemistry

IDENTIFY reasons to study chemistry
   What is Chemistry?
Chemistry is the study of MATTER.

Matter is anything that has mass and takes up space.

Chemistry is involved in all matters of life and most
natural events.

Leaves changing color, flavor of Sour Patch kids, soap
removes grease, volcanoes on Jupiter’s moon Io.
          Areas of Study
  Organic chemistry

  Inorganic chemistry

  Biochemistry

  Analytical chemistry

  Physical chemistry

These 5 areas do not work alone or have fixed
  boundaries… they overlap most of the time.
   Organic Chemistry
The study of chemicals that contain the element
carbon

Organic chemists developed medicines to control
asthma
 Inorganic Chemistry
The study of chemicals that do not contain the
element carbon.

Inorganic chemists might study how lack of calcium
can affect bone growth.
          Biochemistry
The study of processes that take place in living
organisms.

A biochemist might study muscle contraction or
digestion.
 Analytical Chemistry
The study of the composition of matter.

An analytical chemist might study levels of lead in
drinking water or levels of chemicals in blood.
   Physical Chemistry
The study of changes in matter.

A physical chemist might study factors that affect
breathing rate during exercise.
     Pure and Applied
        Chemistry
Pure chemistry is the pursuit of chemical knowledge
for its own sake.

Applied chemistry is research that is directed toward
a practical goal or application.

Pure research can lead to application.

An application can exist before research is done to
explain how it works.
Pure chemistry leads to
     application…
In the early 1900’s, Chemists didn’t understand the
structure of cotton or silk.

Herman Staudinger, a German chemist, made a hypothesis
that these materials contained small units that joined
together like a chain.

In the 1930’s, another chemist tested the theory and found
results that supported this theory. During his research he
created materials that don’t exist in nature. One of these
is the material we now know as nylon.
  Application leads to
   pure discovery…
Doctors have been prescribing aspirin for pain relief
since 1899. They knew it worked but not why.

Research in the 1950’s found that people who took
aspirin daily had fewer heart attacks.

In 1971, chemists discovered that aspirin blocks the
production of a group of chemicals that cause pain.
The group of chemicals is also responsible for the
formation of blood clots that cause heart attack.
           Technology
The development of nylon, the use of aspirin, and
space travel are examples of a system of science
called technology.

Technology allows humans to do things more quickly
and with less effort.
Why study chemistry?
Explain the natural world… why do apples turn brown?
Why does water expand when it freezes?
Prepare for a career… A firefighter needs to know what
chemicals will put out different kinds of fires. A lawn care
specialist needs to understand how different chemicals
affect soil and plants. A photographer needs to
understand what effect chemicals have on the
development of pictures.
Being an informed citizen… Who will you vote for? Where
do they stand on the issue of funding for different
sciences? If no one funded NASA we would not have
smoke detectors, heart monitors, or FLAT SCREEN TVs!!!!!!

								
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