FLAME TEST PRE-LAB
1. Why do different elements, particularly metals, produce different colors
when heated in a flame?
2. For each element below, state the expected flame color (using Google):
Element
Li+
Na+
K+
Ca2+
Sr2+
Flame color
3. What wavelengths correspond to the visible region of the electromagnetic
spectrum?
4. Which color has the shortest wavelength?
5. Which color has the longest wavelength?
6. Why does sodium react violently with water (see the following link for a
demonstration from “The Professor” https://youtu.be/7IT2I3LtlNE)? This link may also
be helpful as well https://www.forbes.com/sites/startswithabang/2017/08/05/ask-ethan-whats-thequantum-reason-that-sodium-and-water-react/?sh=16f2a88c7184