Chemical stability

High school (ages 12+)
Science & Technology

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Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/chemical-stability

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the kinetic barrier?The activation energy required for a transformation, determining kinetic stability
2. What is the gibbs free energy change (Δg)?A positive ΔG indicates the initial state is more thermodynamically stable
3. What does it mean when a chemical is thermodynamically stable?Thermodynamic stability means the chemical is in its lowest energy state, so it has no natural urge to change. The system stays the same unless extra energy is added. The overall composition stays constant over time.
4. Why can diamond stay solid even though graphite is more stable?Diamond is not the lowest energy form, but turning it into graphite needs a huge amount of energy. That high energy barrier keeps the diamond unchanged for millions of years.

Thermodynamic Equilibrium: A state where a system's properties are constant, representing its most energetically favorable configuration.
Activation Energy: The minimum energy required to initiate a chemical reaction or transformation.
Polymer Degradation: The breakdown of long molecular chains into smaller molecules, often due to environmental factors.