A flame test requires a wire made of which material?

A flame test requires a wire made of which material?

• A. Nichrome
• B. Stainless Steel
• C. Platinum
• D. Copper

Answer: (A)

In a flame test, you want the flame color to come from the sample, not from the wire you use to introduce it. That means the wire must stay intact in the flame, not react with the sample, and not contribute its own colors. Nichrome is ideal here because it has a very high melting point and is relatively inert in the hot, oxidizing conditions of a Bunsen flame. It resists reacting with most substances and doesn’t contaminate the flame with its own emission colors. It’s also inexpensive and easy to clean after use, so you can reuse it without skewing results. While platinum would be even more inert, its cost makes nichrome the practical choice in many labs. Metals like copper or stainless steel can release their own colors or react, which would interfere with reading the sample’s flame color.

In a flame test, you want the flame color to come from the sample, not from the wire you use to introduce it. That means the wire must stay intact in the flame, not react with the sample, and not contribute its own colors. Nichrome is ideal here because it has a very high melting point and is relatively inert in the hot, oxidizing conditions of a Bunsen flame. It resists reacting with most substances and doesn’t contaminate the flame with its own emission colors. It’s also inexpensive and easy to clean after use, so you can reuse it without skewing results. While platinum would be even more inert, its cost makes nichrome the practical choice in many labs. Metals like copper or stainless steel can release their own colors or react, which would interfere with reading the sample’s flame color.