10 Questions
What is chemistry?
The scientific study of the properties and behavior of matter.
What does chemistry study in terms of chemical elements and compounds?
Their composition, structure, properties, behavior, and the changes they undergo during reactions with other substances.
How has chemistry evolved over time?
It has evolved and now encompasses various areas of specialization, or subdisciplines, that continue to increase in number and interrelate to create further interdisciplinary fields of study.
Why is chemistry sometimes called the central science?
Because it provides a foundation for understanding both basic and applied scientific disciplines at a fundamental level.
What are some examples of the applications of chemistry?
Aspects of plant growth, the formation of igneous rocks, how atmospheric ozone is formed, how environmental pollutants are degraded, the properties of the soil on the moon, how medications work, and how to collect DNA evidence at a crime scene.
Why do stars twinkle?
Stars twinkle because they’re so far away from Earth that, even through large telescopes, they appear only as pinpoints.
What term do astronomers use to describe the twinkling of stars?
Astronomers use the term “scintillation” to describe the twinkling of stars.
Why do planets appear to shine steadily?
Planets appear to shine steadily because they’re closer to Earth and so appear not as pinpoints, but as tiny disks in our sky.
What is the difference in appearance between stars and planets when viewed through a telescope?
Stars remain pinpoints, while planets appear as disks when viewed through a telescope.
How does Earth's atmosphere affect the light from stars and planets?
Earth’s atmosphere refracts the light from stars, causing them to twinkle, and refracts the light from planets, causing them to appear to shine steadily.
Test your knowledge of the fundamental principles and concepts in chemistry with this quiz. Explore the properties, behavior, and composition of matter, as well as chemical reactions and bonds.
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