For Each of the Following,indicate Whether a Physical or Chemical $\degree$

question 130

Essay

For each of the following,indicate whether a physical or chemical change occurs.
a.Mercury(II)oxide is heated and forms mercury metal (Hg)and oxygen gas (O₂).
b.Liquid mercury is cooled to -40 $\degree$ C,at which point it solidifies.
c.A glowing match is thrust into hot oxygen gas and bursts into flame.
d.Water vapor condenses on a cool surface.

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Definitions:

AIG

American International Group, a multinational finance and insurance corporation known for its extensive global operations and services.

Fannie Mae

A government-sponsored enterprise (GSE) in the United States aimed at expanding the secondary mortgage market by securitizing mortgages into mortgage-backed securities.

Capital Stock

The total amount of physical goods a company owns for the purpose of production, including buildings, machinery, and equipment.

Productivity

The measure of the efficiency of production, often quantified as the ratio of output to input in the production process.