1. Chapter 1 Introduction to Chemistry 1.2 Chemistry and You
1.1 The Scope of Chemistry
1.2 Chemistry and You
1.3 Thinking Like a Scientist
1.4 Problem Solving in Chemistry
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2. What are three general reasons to study Chemistry?
Learning Objectives
What are three general reasons to study Chemistry?
What are some outcomes of modern research in Chemistry?
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3. How is chemistry used to study worlds other than your own?
CHEMISTRY & YOU
How is chemistry used to study worlds other than your own?
Scientists who know chemistry have used the Hubble Space Telescope to discover water and compounds containing carbon on a planet located 63 light years from Earth.
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4. What are three general reasons to study chemistry?
Why Study Chemistry?
Why Study Chemistry?
What are three general reasons to study chemistry?
Chemistry can be useful in explaining the natural world, preparing people for career opportunities, and producing informed citizens.
ON NEXT SLIDE
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5. Why Study Chemistry?
Chemistry can be useful in explaining the natural world, preparing people for career opportunities, and producing informed citizens.
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6. Explaining the Natural World
Why Study Chemistry?
Explaining the Natural World
Chemistry can help you satisfy your natural desire to understand how things work. For example, chemistry can explain:
why cut apples turn brown upon exposure to air.
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7. Explaining the Natural World
Why Study Chemistry?
Explaining the Natural World
Chemistry can help you satisfy your natural desire to understand how things work. For example, chemistry can explain:
why cut apples turn brown upon exposure to air.
why the texture of eggs changes from runny to firm as eggs are boiled.
why water expands as it freezes.
why sugar dissolves faster in hot water than in cold water.
why yeast makes bread dough rise.
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8. Why Study Chemistry?
Preparing for a Career
Chemists contribute to society in many ways. You do not need to have the word chemist in your job title to benefit from understanding chemistry.
A reporter may be asked to interview a chemist to gather background for a story.
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9. Why Study Chemistry?
Preparing for a Career
Chemists contribute to society in many ways. You do not need to have the word chemist in your job title to benefit from understanding chemistry.
Turf managers have the important task of keeping the grass on golf courses, lawns, and soccer fields healthy.
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10. Why Study Chemistry?
Preparing for a Career
Chemists contribute to society in many ways. You do not need to have the word chemist in your job title to benefit from understanding
chemistry.
A firefighter must know which chemicals to use to fight different types of fires.
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11. Being an Informed Citizen
Why Study Chemistry?
Being an Informed Citizen
Industry, private foundations, and the federal and state government all provide funds for scientific research.
Space exploration research could not take place without federal funding.
NASA research has led to the development of many items used on Earth. These include smoke detectors, scratch-resistant plastic lenses, heart monitors, and flat-screen televisions.
What if all the money spent on space exploration was used to find a cure for cancer?
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12. Being an Informed Citizen
Why Study Chemistry?
Being an Informed Citizen
You will need to make choices that will influence the direction of scientific research.
You may vote directly on some issues through ballot initiatives or indirectly through the officials you elect.
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13. Being an Informed Citizen
Why Study Chemistry?
Being an Informed Citizen
When it comes to scientific research, there is no one correct answer.
However, knowledge of chemistry and other sciences can help you evaluate the data presented, arrive at an informed opinion, and take appropriate action.
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14. Which of the following careers would require some understanding of chemistry?
A. chef
B. doctor
C. farmer
D. all of the above
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15. Which of the following careers would require some understanding of chemistry?
A. chef
B. doctor
C. farmer
D. all of the above
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16. Chemistry, Technology, and Society
What are some outcomes of modern research in chemistry?
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17. Chemistry, Technology, and Society
Many basic items you use every day, such as the sneakers you wear or the cereal you eat, are products of technology.
Technology is the means by which a society provides its members with those things needed and desired.
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18. Chemistry, Technology, and Society
Modern research in chemistry can lead to technologies that aim to benefit the environment, conserve and produce energy, improve human life, and expand our knowledge of the universe.
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19. Chemistry, Technology, and Society
Materials and the Environment
Chemists don’t just study matter—they also use what they know about the structure and properties of matter to make new materials with different or improved properties.
For example, chemistry has played a large role in developing plastics for different uses.
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20. Waste produced (thousands of tons)
Interpret Graphs
15,000
12,500
10,000
7500
5000
2500
Waste produced (thousands of tons)
Year
Although plastics are a part of most of our daily lives, there is concern that their use is taking a toll on the environment and on natural resources.
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21. Chemistry, Technology, and Society
Most plastics are made using petrochemicals, which are chemical products derived from petroleum.
The supply of petrochemicals is limited.
There has been demand for plastics that are better for the environment, such as the bioplastic shown at right, which is made from corn.
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22. Chemistry, Technology, and Society
Energy
There are only two ways to meet the rising global demand for energy—conserve it or produce more of it. Chemistry plays an essential role in both of these options.
A knowledge of chemistry was necessary to develop the batteries that run gasoline-electric hybrid cars.
Chemists help design materials that collect energy from the sun that is then converted to electricity.
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23. Chemistry, Technology, and Society
Medicine and Biotechnology
Chemistry supplies the medicines, materials, and technology that doctors use to treat their patients.
Chemistry can also develop materials to repair or replace body parts, such as arteries or artificial knees or hips.
ED Heads knee replacement
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24. Chemistry, Technology, and Society
Medicine and Biotechnology
Biotechnology applies science to the production of biological products or processes.
It uses techniques that can alter DNA in living organisms.
When genes from humans are inserted into bacteria, the bacteria act as factories that produce chemicals of importance to humans, such as insulin.
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25. Chemistry, Technology, and Society
The Universe
To study the universe, chemists gather data from afar and analyze matter that is brought back to Earth.
This vehicle was designed to determine the chemical composition of rocks and soil on Mars.
Data collected at the vehicle’s landing site indicated that the site was once drenched with water.
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26. How can chemistry be used to find evidence of life on other planets?
CHEMISTRY & YOU
How can chemistry be used to find evidence of life on other planets?
By analyzing light from stars, scientists can study their composition, and data gathered by probes can be used to analyze matter in space.
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27. Name one way in which chemistry has been used to help modern society conserve energy.
batteries used in gasoline-electric hybrid vehicles
materials used in solar-power generation
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28. Some possible answers include:
Name one way in which chemistry has been used to help modern society conserve energy.
Some possible answers include:
batteries used in gasoline-electric hybrid vehicles
materials used in solar-power generation
batteries used in gasoline-electric hybrid vehicles
materials used in solar-power generation
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29. Key Concepts
Chemistry can be useful in explaining the natural world, preparing people for career opportunities, and producing informed citizens.
Modern research in chemistry can lead to technologies that aim to benefit the environment, improve human life, and expand our knowledge of the universe.
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30. Glossary Terms
technology: the means by which a society provides its members with those things needed and desired
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31. Chemistry is relevant to many professions.
BIG IDEA
Chemistry is relevant to many professions.
A knowledge of chemistry can help you become an informed citizen.
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