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Questions and Answers
What is the primary use of Plaster of Paris in a medical context?
What chemical transformation occurs when Plaster of Paris is mixed with water?
What is the physical state of Plaster of Paris before it is mixed with water?
Which of the following best describes the initial and final products of mixing Plaster of Paris with water?
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Which of the following statements about Plaster of Paris is incorrect?
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Study Notes
Plaster of Paris Overview
- Plaster of Paris is primarily used in medicine for immobilizing fractured bones to aid in proper healing.
- It appears as a white powder and is known for its ability to harden upon mixing with water.
Chemical Composition
- The chemical formula for Plaster of Paris is CaSO₄·1/2 H₂O, indicating it contains calcium sulfate with half a molecule of water.
- When mixed with water, it reverts to gypsum, forming a hard solid mass that provides structural support.
Properties and Uses
- The quick hardening property of Plaster of Paris makes it suitable for casting molds and creating casts for broken limbs.
- It has been a traditional material in construction and art, in addition to its medical uses.
Important Reactions
- The setting process involves an exothermic reaction where Plaster of Paris reacts with water, releasing heat and hardening effectively.
- Once set, it can be sanded, shaped, or painted, showcasing its versatility in various applications.
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Description
This quiz explores the properties and uses of Plaster of Paris, particularly in the context of supporting fractured bones. Learn about its chemical composition and how it transforms when mixed with water. Test your understanding of this important medical material.
