Question 7

Glass isn't an element, but a combination of several elements.

This statement is explicitly confirmed in the extract, which states that "Glass is not an element, but a combination of several elements." This definition is fundamental to understanding what glass is.

A) Glass isn't an element, but a combination of several elements.

This option is correct as it directly reflects the information provided in the extract. The distinction made in the article emphasizes that glass is a composite material, highlighting its complexity and the role of various additives in its composition.

B) Glass is the most important material in modern technology.

While glass is certainly significant in modern technology, this statement is subjective and not directly supported by the extract. The article does not rank the importance of glass compared to other materials, making this option an interpretation rather than a factual statement.

C) Glass can only be used in decorative items.

This statement is incorrect as it limits the use of glass to decorative purposes, which contradicts the extract. The article mentions various practical applications of glass, including windows and corrective lenses, indicating that it serves multiple functional roles beyond decoration.

D) Glass is naturally occurring and needs no processing.

This option is also incorrect. The extract clearly states that glass is a manufactured product, created by combining several elements, which involves processing. It does not occur naturally in a form that can be used without modification.

Conclusion

Option A is definitively the correct answer as it is a factual statement directly supported by the extract. All other options either misinterpret the information, make subjective claims, or present inaccuracies about the nature and uses of glass. Thus, understanding the basic composition of glass as a combination of elements is crucial in grasping its significance in various applications.