Flame Test Lab
K-Potassium
Purple
Li-Lithium
Red
Sr-Strontium
Red
Ca-Calcium
Red-orange
which pairs of ions produce similar colors in the flame tests
The pairs with similar colours were Ba2+ and Cu2+, and Sr2+ and Li+. Ba and Cu had light green-ish yellow-ish colours, and Sr and Li had red colours.
what particles are found in the chemicals that may be responsible for the production of color light?
The particles responsible for giving off colored light would be the electrons because the excitement caused by heating makes the electrons jump from ground state into a high energy level.
colorful light emissions are applicable to everyday life
Fireworks emit light when a fire, such as the fuse, excites the different electrons in different metals. These light emissions are related because they both have to do with and element's elctrons become excited.
Cu-Copper
Green
why do you think the chemicals have to be heated in the flame before the colored light is emitted?
Light carries away energy. At room temperature atoms sit in their lowest-energy state most of the time, so they don't have any energy to give to light. When they're heated, the atoms spend some time in higher energy states, from which they can emit light while falling back down to the low-energy states.
Define Excited State
Whenever an atom is above a ground state
Define Ground State
Whenever an atom is in a stable state
Ba-Barium
Yellow-orange
Na-Sodium
Yellow-orange
Unknown-Na-Sodium
Yellow-orange