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Unraveling Chemistry's Mysteries: Understanding Claims and Evidence

Delve into the world of chemistry to explore common questions and evaluate scientific claims using the FLaReS test. Understand why chemicals are viewed negatively, the importance of studying chemistry, and how scientists handle complex studies without immediate applications.

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Unraveling Chemistry's Mysteries: Understanding Claims and Evidence

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  1. Questions you may have asked yourself: • Why do people suggest that chemicals are bad for us? • Why should I study chemistry? • Why do scientists so often say “more study is needed”? • Why do scientists bother with studies that have no immediate applications? • Can we change lead into gold?

  2. Model

  3. 35 Xenon Atoms – Don Eigler - 1989

  4. Carbon Monoxide Man

  5. Solid-Liquid-Gas Simulation

  6. SI Unit Definitions from the National Institute of Standards and Technology (NIST)

  7. The IPK – International Prototype Kilogram

  8. Right Left

  9. 01_T06.JPG

  10. Testing a Scientific Claim – Thinking Critically about a Claim • FLaReS Test (a modification of a more substantial approach): • Falsifiability: Can the claim be proven to be either true or false? • Logical: Arguments supporting the claim must be logical – if any premises in the argument are false, the claim cannot be validated • Reproducible: If based on scientific evidence, the evidence must be reproducible. • Sufficient: The evidence provided must be adequate to support the claim. • The burden of evidence rests with the claimant • Extraordinary claims demand extraordinary evidence • Evidence based on authority and/or testimony is never adequate • A claim must pass all tests to be considered valid.

  11. Example of FLaReS A psychic claims he can bend a spoon using only the powers of his mind. However, he says he can do so only when the conditions are right; there must be no one with negative energy present. Evaluate this psychic’s claim using the FLaReS test Falsifiable? Logical? Reproducible? Sufficient?

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