MathDB
2013 USNCO Problem 46: Flame Test

Source:

April 20, 2013

Problem Statement

What is the characteristic color of the flame test for potassium?
<spanclass=latexbold>(A)</span> yellow<spanclass=latexbold>(B)</span> red<spanclass=latexbold>(C)</span> green<spanclass=latexbold>(D)</span> violet{ <span class='latex-bold'>(A)</span>\ \text{yellow}\qquad<span class='latex-bold'>(B)</span>\ \text{red}\qquad<span class='latex-bold'>(C)</span>\ \text{green}\qquad<span class='latex-bold'>(D)</span>}\ \text{violet}\qquad