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Chapter 1: Problem 18

Zirconia, an oxide of zirconium, is often used as an affordable diamond substitute. Just like diamond, it is a colorless crystal which sparkles under sunlight. Which of the following physical properties do you think would help in differentiating between diamond and Zirconia-melting point, density, or physical state?

Short Answer

Expert verified
Both the melting point and density can be used to differentiate between diamond and Zirconia. Diamond has a melting point of about 3820 K, higher than Zirconia's melting point which is around 2680 K. On the other hand, diamond has a lower density, 3.51 g/cm³, compared to Zirconia which ranges from 5.6 to 6.0 g/cm³. Their physical state, both being solid crystals, however, is not a distinguishing property.

Step by step solution

01

Gathering information about diamond and Zirconia properties

Before we can determine which property will help us differentiate between diamond and Zirconia, we need to know their values for each property. For diamond: - Melting point: about 3820 Kelvin (K) - Density: 3.51 grams per cubic centimeter (g/cm³) - Physical state: Solid crystal For Zirconia: - Melting point: about 2680 Kelvin (K) - Density: 5.6 - 6.0 grams per cubic centimeter (g/cm³) - Physical state: Solid crystal Now that we have the values for each property, we can compare them and decide which one is most helpful in distinguishing diamond from Zirconia.
02

Comparing physical states

Both diamond and Zirconia are solid crystals. This property is not useful in differentiating between the two materials since they have the same physical state.
03

Comparing melting points

The melting point of diamond is about 3820 K, while that of Zirconia is around 2680 K. The melting points are quite different, so this property can be helpful in distinguishing between the two materials.
04

Comparing densities

The density of diamond is 3.51 g/cm³, whereas the density of Zirconia ranges from 5.6 to 6.0 g/cm³. The densities are also quite different, so this property can be helpful in distinguishing between the two materials.
05

Conclusion

In distinguishing between diamond and Zirconia, both the melting point and density are helpful properties, whereas the physical state is not. The melting point and density of diamond and Zirconia are substantially different, making it easier to differentiate between the two materials using these properties.

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