Elements

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What is Chemistry?
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Chemistry studies the

• Composition
• Structure
• Properties
• Transformations
• of matter

(What its made of)
(How its arranged)
(Characteristics)
(Behavior)
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What is Matter?

• Anything that has mass occupies space.

Which of the following are matter? Rain Sunlight
Clouds Heat Rocks Air Steam Radios Radiowaves

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Whats the difference between mass and weight?

• Mass is a measure of the amount of matter.
• Weight is more complicated. Weight depends on
  the amount of matter and on the gravitational
  pull exerted on the matter.

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What do chemists do?

• They figure out how things work
• And
• They design materials with specific properties
  for specific applications.

Basic Research
Applied Research
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What materials in your life result from
chemistry?

• Medicines
• Plastics
• Metals
• Ceramics
• Synthetic Fibers
• Concrete
• Abundant Safe food supply

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What about energy?

• Fossil Fuels
• Solar
• Nuclear
• Batteries

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What about the environment?

• Ozone Depletion
• Global Warming
• Acid Rain
• Ground water contamination
• Surface water contamination
• Heat pollution

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What kinds of chemistry are there?
Organic
Environmental
Atmospheric
Inorganic
Physical
Surfaces
Pharmaceutical
Nuclear
Analytical
Biochemistry
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Whats this?
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What are Elements?
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Elements are

• Fundamental building blocks of nature.
• Different elements have different types of atoms.

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What are the parts of an atom?
Protons
Neutrons
Electrons
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How are atoms of different elements different?

• They have different numbers of protons.

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How many elements are there?

• About 116 elements.
• Some are man-made.
• 88 or 92 naturally occurring.
• (Some have v. short half-lives none around. 43,
  61, 85, 87 no stable isotopes.) Some say only
  43 61 not.
• Depends on how you count.

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What is the most abundant element in the universe?

• Hydrogen!

What is the most abundant element in the earths
crust?
What is the most abundant element in the human
body?
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What does it look like when you work as a chemist?
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Travel?
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1 atm 760 torr
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Requirements for Medical School

• 1 year of biology
• 1 year of calculus
• 1 year of physics
• 2 years of chemistry

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Requirements for Engineering

• Many engineering fields require at least 1 year
  of college chemistry

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Requirements for Art History/Art Restoration

• At least 1 year of college chemistry