Flame tests are a quick and easy way to identify the presence of certain metal ions based on the color they emit when heated in a flame. Here are the typical flame colors for the listed elements: Sodium (Na): Bright yellow Calcium (Ca): Orange-red Potassium (K): Lilac (light purple) Copper (Cu): Green/blue-green Lithium (Li): Crimson (deep red) Strontium (Sr): Bright red These colors are due to the excitation of electrons in the metal ions. When the metal salts are heated, electrons gain energy

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