Which One of the Following Represents a Physical Change

question 50

Multiple Choice

Which one of the following represents a physical change?

• A)Milk turns sour.
• B)Rust forms on iron nails.
• C)Sugar ferments to form ethanol.
• D)An egg begins to smell very bad.
• E)Sugar melts and forms a syrupy liquid.

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Definitions:

Eyelash Viper

A venomous snake known for its distinctive scales above the eyes, resembling eyelashes, found mainly in Central and South America.

Bacterial Spore

A dormant, highly resistant structure formed by some bacteria as a survival strategy in adverse conditions.

Regulatory Network

A regulatory network is a system of interacting genes, transcription factors, promoters, RNA, and other molecules. It functions like a biological circuit, responding to signals with output that controls the activation of genes during development, the cell cycle, and the activation of metabolic pathways.