You can distinguish between elements because each element had a different flame color.
Results
Element: Li Na K Ca Sr Ba Cu
Color: Hot Pink Orange Purple Red/orange Red Yellow Green
*Could you identify the unknown? What was it? How do you know?
The unknown flame could be identified because of it's color not two elements had the same color. Unknown #1 was Li because of its hot pink flame; Unknown #2 was K because of its purple flame.
*Watch this YouTube video of cesium's flame test. Based on what you observed, can cesium's flame be a different color? Why or why not?
Based on the YouTube video, no cesium's flame color cannot be a different color, because each element has its own color to distinguish it from others, it will always be a blue-violet flame, just as potassium will always be a violet flame, Lithium will always be hot pink, etc.
*In terms of the law of conservation of energy, what exactly is gaining energy and what is losing energy?
When the element touched the flame it gained energy by absorbing it, then the energy gained is released which produces photons.
*Why do elements produce colored flames?
Because each photon has a different amount of energy, the different amounts of energy are what causes the different colors of flames.
Cu
Ca
Li
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