A Skillet Is Lined with a Thin Layer of Cooking

question 53

Multiple Choice

A skillet is lined with a thin layer of cooking oil followed by a layer of unpopped popcorn kernels.Upon heating the kernels all pop thereby escaping the skillet.Which of the following physical and/or chemical changes occurred?

• A)The water within each kernel is heated to the point that it would turn into water vapor as the kernels popped (physical change).
• B)The starches within the kernels are cooked by the high temperatures (chemical change).
• C)Both A and B occur.
• D)Physical and chemical changes cannot occur without a real chemical reaction taking place.

Comprehend the formation and impact of photochemical smog.

Identify the causes and consequences of acid deposition on human health, ecosystems, and infrastructure.

Understand acid deposition as a multi-scale environmental problem.

Distinguish soil types based on their susceptibility to acid deposition.

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