If a Solid Piece of Shiny Sodium Metal Is Exposed

question 94

Multiple Choice

If a solid piece of shiny sodium metal is exposed to chlorine gas,a large amount of heat is released and the white solid sodium chloride (table salt) forms.Based on this information,which of the following statements is TRUE?

• A)This process represents a physical change.
• B)Mass is lost during this process.
• C)Sodium chloride is an element.
• D)This process was exothermic.
• E)none of the above

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Definitions:

Local Variables

Variables declared within a function or block, accessible only in their scope.

Global Variables

Variables that are defined outside any function and can be accessed from any part of the program.

Declaration Statement

A statement in programming that specifies a variable's type (and optionally its initial value) without executing any logic.