A Chemical Change

question 76

Multiple Choice

A chemical change

• A) occurs when methane gas is burned.
• B) occurs when paper is shredded.
• C) occurs when water is vaporized.
• D) occurs when salt is dissolved in water.
• E) occurs when powdered lemonade is stirred into water.

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Definitions:

Respiration

The biochemical process in living organisms involving the exchange of gases (oxygen and carbon dioxide) to produce energy.

Brainstem

A crucial part of the central nervous system that connects the brain to the spinal cord and controls vital functions such as breathing and heart rate.

Cerebrum

The largest part of the brain responsible for voluntary activities, intelligence, memory, and emotional expression.

Cerebellum

A part of the brain located at the back of the skull, responsible for coordinating movement and balance.