6302
Given the stochastic nature of nucleation of ice from supercooled water , multiple runs on the same sample are needed to determine if a given surface coating has a real and statistically significant effect on the nucleation temperature .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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