Question

The color given to flame by sodium salts

Answer 1

Most fuels contain sodium (e.g., candles and wood), so you're familiar with the yellow color this metal adds to a flame. The color is muted when sodium salts are placed in a blue flame, like a Bunsen burner or alcohol lamp. Be aware, sodium yellow overwhelms other colors. If your sample has any sodium contamination, the color you observe may include an unexpected contribution from yellow!

Iron can also produce a golden flame (although sometimes orange).