Which of the Following Is Not an Example of a Physical

question 22

Multiple Choice

Which of the following is not an example of a physical change?

• A)Ice melts when warmed.
• B)Dry ice sublimes (converts from a solid to a gas)at room temperature.
• C)Liquid nitrogen converts to a gas at room temperature.
• D)Blue copper sulfate crystals dissolve in water to form a blue solution.
• E)When hydrogen and oxygen gas are mixed in the presence of a spark, water is formed.

---

Definitions:

Differential Revenue

The difference in revenue between two alternative decisions or periods.

Course of Action

A decision plan or set of steps to be followed to solve a problem or achieve an objective.

Contribution Margin

The amount remaining from sales revenue after variable costs are deducted, used to cover fixed costs and generate profit.

Differential Revenue

Differential revenue is the difference in revenue between two alternative decisions or periods, highlighting the potential increase or decrease in income resulting from a chosen action.