Which of the Following Is an Example of Chemical Change

question 68

Multiple Choice

Which of the following is an example of chemical change?

• A)Copper building materials develop a green patina over time.
• B)Water vapor condenses on the window.
• C)Ethanol evaporates.
• D)A mixture of hydrogen and oxygen gas explodes on ignition.
• E)A helium balloon goes up in the air.

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Definitions:

Writing Board

A flat surface, often framed, on which one writes or attaches notices.

Evaluative Measures

Tools or methodologies used to assess the effectiveness or impact of a program or intervention.

Wound Healing

The physiological process by which the body repairs tissue damage, involving coagulation, inflammation, proliferation, and maturation stages.

Respiratory Rate

The number of breaths a person takes per minute, an important vital sign indicating respiratory health.