How does the carat value of a gold alloy affect its properties and uses?

Higher carat values indicate a higher proportion of gold, which typically results in a softer and more malleable material. This makes high-carat gold alloys suitable for fine jewelry, while lower carat values may be used for more durable items.

This question assesses the student's ability to apply their knowledge of carat values to real-world applications. A strong answer connects the carat value to the physical properties and practical uses of gold alloys, demonstrating comprehension of material science.