What is the flame test result for calcium ions?

The flame test is a qualitative analysis technique used to identify the presence of certain metal ions based on the color of the flame produced when a sample is heated. When calcium ions are introduced to a flame, they emit a distinct orange-red color. This characteristic color is due to the excitation of the calcium atoms when they absorb heat energy, causing electrons to move to higher energy levels. Upon returning to their ground state, the atoms release energy in the form of visible light, which appears as the orange-red hue associated with calcium.

This property is utilized in various laboratory analyses and is particularly useful for distinguishing calcium from other metal ions that have different flame colors. In the context of the flame test, this distinctive color helps to confirm the presence of calcium ions in a sample.