Select the Best Statement

question 23

Multiple Choice

Select the best statement.

• A)Physical changes may be reversed by changing the temperature.
• B)Physical changes alter the composition of the substances involved.
• C)Physical properties are not valid characteristics for identifying a substance.
• D)Physical properties are mostly extensive in nature.
• E)Physical changes are usually accompanied by chemical changes.

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Definitions:

Welfare State

A social system in which the government takes responsibility for the welfare of its citizens, providing services such as healthcare, education, and financial support.

Robert Mcnamara

A prominent figure in U.S. history who served as the Secretary of Defense during the Vietnam War and later as the President of the World Bank.

Vietnam War

A prolonged conflict from 1955 to 1975 between communist forces in North Vietnam, backed by its communist allies, and the government of South Vietnam, supported by the United States and other anti-communist nations.

War Powers Act

Law passed in 1973, reflecting growing opposition to American involvement in the Vietnam War; required congressional approval before the president sent troops abroad.