Which of These Following Statements About Atoms Is Valid

question 225

Multiple Choice

Which of these following statements about atoms is valid?

• A)The atom is the smallest particle that exists.
• B)There are thousands of kinds of atoms, accounting for the great variety of substances.
• C)There are nearly 100 different kinds of atoms found in nature.
• D)Atoms are small building blocks of nature, being so small they cannot be photographed.
• The word molecule can be at least partly identified by the following statement:
• E)The molecule is the smallest particle that exists.
• F)The molecule is the smallest subdivision of matter that still retains the chemical properties of the substance from which it originates.
• G)Combinations of molecules form atoms.
• H)The chemical elements consist of 105 different molecules, a list that keeps growing.

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Definitions:

pH Scale

A scale used to specify the acidity or basicity of an aqueous solution, ranging from 0 to 14.

Hydrochloric Acid

A strong, corrosive acid that is a component of gastric juice in the stomach, aiding in digestion and sterilizing ingested food.

Acidic

Having a pH less than 7, typically described for solutions that have a higher concentration of hydrogen ions.

Given Element

A chemical element specified or identified in a particular context or situation.