Which of the Following Is a Physical Change

question 146

Multiple Choice

Which of the following is a physical change?

• A)Carbon combines with oxygen to form carbon dioxide.
• B)Ice melts at 0°C.
• C)A red substance is decomposed by heat to form mercury and oxygen.
• D)Water is decomposed by electricity into hydrogen and oxygen.

Understand the formation of precipitation through atmospheric processes.

Analyze the role and impact of large grazers in grassland ecosystems.

Determine the factors defining a region's climate and its relation to biome distribution.

Identify the dominant flora in boreal forests and their ecological significance.

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Definitions:

Intermolecular Attractions

Forces which cause attraction between molecules, influencing the physical properties of substances; includes hydrogen bonds and van der Waals forces.

Methylthiol

A sulfur-containing organic compound with the formula CH3SH, known for its strong odor and used in the production of chemicals.

Structural Isomers

Compounds with the same molecular formula but different arrangements of atoms.

Condensed Formulas

A method of writing the formula of a molecule that shows the arrangement of its atoms in a way that emphasizes its structure, without explicitly drawing all bonds.