ChemCafe — science, chemistry and physics made simple – Page 60 of 276 – Chem Cafe is a place to share and discuss new scientific research. Read about the latest advances in chemistry, physics, astronomy, biology, medicine, social science, and more. Find and submit new publications and popular science coverage of current research.

Posted inin Chemistry

Understanding Positive and Negative Values of Enthalpy of Formation

Posted byby Franklin Veaux
2 weeks ago
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3 min

Why Is Enthalpy of Formation Sometimes Positive and Sometimes Negative? Enthalpy of formation is sometimes positive and sometimes negative because it depends on the relative stability of the compound compared...

Posted inin Chemistry

Understanding Why the Equilibrium Constant Keq Is Unitless and Its Implications

Posted byby Franklin Veaux
2 weeks ago
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6 min

Why Does the Equilibrium Constant Keq Have No Units? The equilibrium constant, Keq, has no units because it is fundamentally defined in terms of dimensionless quantities known as activities. Activities...

Posted inin Chemistry

Top Textbook Recommendations for Beginners in Chemistry

Posted byby Franklin Veaux
2 weeks ago
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2 min

Recommended Chemistry Textbooks for Beginners Beginners seeking chemistry textbooks can rely on several excellent resources, from free online texts to classic and modern published works. These books offer clear explanations...

Posted inin Chemistry

Chemicals Used in Liquid Hourglasses: Key Solvents, Dyes, and Safety Considerations

Posted byby Franklin Veaux
2 weeks ago
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4 min

Chemicals Used in Liquid Hourglasses Liquid hourglasses rely on the controlled flow of two immiscible liquids, typically involving a polar and a non-polar solvent. Commonly, water serves as the polar...

Posted inin Chemistry

Reclaim Gold from Metal: A Home Guide to Recovery Methods and Best Practices

Posted byby Franklin Veaux
2 weeks ago
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3 min

How to Reclaim Gold Plating from Home Reclaiming gold plating from metal pieces at home involves dissolving the base metal chemically while leaving the gold intact. The most common and...

Posted inin Chemistry

Why Each Element in the Periodic Table Has a Unique Proton Count

Posted byby Franklin Veaux
2 weeks ago
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5 min

Why Don’t Two or More Elements in the Periodic Table Have the Same Number of Protons? Two or more elements cannot have the same number of protons because the number...

Posted inin Molecular

Factors That Influence the Likelihood of Our Genetic Code Evolving Over Alternatives

Posted byby Franklin Veaux
2 weeks ago
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2 min

Is There Anything That Made Our Genetic Code Likelier to Evolve Than Alternatives? The standard genetic code’s evolution appears not to be inherently likelier than alternative codes, given the randomness...

Posted inin Molecular

CRISPR Design Questions: Guidance on Vectors, Markers, and Validation Techniques

Posted byby Franklin Veaux
2 weeks ago
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3 min

CRISPR Design Questions: Essential Guidance on Vector Choice, Markers, and Validation CRISPR design requires choosing suitable vectors, markers, and reliable validation methods. Vector choice impacts efficiency; combining fluorescent proteins (FP)...

Posted inin Chemistry

Compounds vs Molecules: Understanding Key Differences and Their Relationship in Chemistry

Posted byby Franklin Veaux
2 weeks ago
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5 min

Understanding Compounds vs Molecules A compound is a substance made of two or more different elements chemically bonded, while a molecule is a group of atoms bonded covalently, regardless of...

Posted inin Chemistry

Glycerin Mist Toy: Understanding the Composition and Properties of Its Mist/Smoke

Posted byby Franklin Veaux
2 weeks ago
0 Comments
3 min

What Is in the Mist/Smoke from a Glycerin Mist Toy? The mist or smoke emitted by a glycerin mist toy primarily consists of tiny droplets of vegetable glycerin. These droplets...