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☆☆☆☆☆Answer By exposing materials to a hot flame (from a Bunsen burner typically), the color of the flame can be used to identify the material. Certain elements give off a characteristic color when heated to high temperature. See the Related Links for "Wikipedia: flame test" to the bottom for the answer.
A method of obtaining an emission spectrum from a sample
The frequency of a wave, represented by the letter f, is the number of occurrences of a repeating event per unit time. It is also referred to as temporal frequency. The SI unit of cycles per second is called hertz or Hz. Hz can be expressed as a reciprocal second (s-1 or 1/s).
The number of waves that pass a point in 1 second
the energy of a photon is h times f
'with two kittens' describe the cat. So, you should write 'is sleeping'. But if you mean that all three of them are sleeping, write 'A cat and his two kittens are sleeping'.
Energy is transferred when molecules absorb electromagnetic waves.
The energy needed to form the substance from its elements
The reaction is exothermic.
The products becoming more ordered than the reactants
the movement of energy and heat .
It tells if the reaction will process spontaneously or not
G = 0 kJ/mol
it is spontaneous at 500 k
The potential energy of the products is greater than the potential energy of the reactants.
The wavelength is 671 nm.
1 proton, 3 neutrons
1.3 ml
(Apex's answer)
