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Ch.1 - Introduction: Matter, Energy, and Measurement

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?

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Hi everyone today, we have a question telling us that amethyst silicon dioxide are commonly used as a substitute to sapphire aluminum oxide, which of the fallen can be used to distinguish amethyst from sapphires. So let's first look at a melting points for amethyst, It has a melting point of 1713 degrees Celsius. For sapphire, It has a melting point of 72°C be appearance. They are commonly used to substitute sapphire. So appearance isn't going to help us see refractive index for amethyst. It is 1. for saff I It is 1.768 and those are too close for us to really distinguish them apart. So C is also incorrect. So our answer here is a melting point. Thank you for watching. Bye.
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