Question

Diego is conducting an experiment to investigate how temperature affects chemical change. He has three pieces of cheese that he just bought from the store. He left one piece of cheese outside, one on the kitchen counter, and one in the refrigerator. His prediction is that the piece in the refrigerator will not mold, the one on the counter will mold a little, and the one outside will mold a lot. Select the conclusion The piece of cheese in the refrigerator had the most amount of chemical change. The piece of cheese on the counter had the most amount of chemical change. The piece of cheese in the refrigerator had the least amount of chemical change. The piece of cheese outside had the least amount of chemical change.

Answer 1

The piece of cheese in the refrigerator had the least amount of chemical change.

• Moulding occurs on substances which are warm and moist
• Mold thrives in warm and humid places
• In refrigerators, the environment is cool and dry
• This environment hinders the growth of mold
• The bacteria and fungi require optimum temperatures to flourish, which is not present in a refrigerator
• The cheese placed outside and on the counter will grow mold as those environments do not arrest the growth of mold
• Refrigeration ensures that food is not spoilt

Therefore, the least amount of chemical change takes place on the cheese placed in the refrigerator.

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