The β (Beta) hemihydrate of gypsum requires more water to float its powder particles because______________?
Correct answer: C. They are more irregular in shape and porous
- A. They are more regular in shape and dense
- B. They are more regular in shape and highly porous
- C. They are more irregular in shape and porous
- D. They are more dense and prismatic in shape
Explanation
Beta hemihydrate particles are irregular and porous, giving them a larger surface area and requiring more water to wet and separate them. Alpha hemihydrate is denser and more regularly shaped, so it needs less water.
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