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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
Quarks are any of a group of subatomic particles thought to be among the fundamental constituents of matter more specifically, of protons and neutrons.
The concept of the quark was first proposed by Murray Gell-Mann and George Zweig ; its name was taken from James Joyce's novel Finnegans Wake. Quarks include all particles that interact by means of the strong force. They have mass and spin, and they obey the Pauli exclusion principle. They have never been resolved into smaller components, and they never occur alone. Their behaviour is explained by the theory of quantum chromodynamics, which provides a means of calculating their basic properties. There are six types of quarks, called up, down, strange, charm, bottom, and top. Only the up and down quarks are needed to make protons and neutrons; the others occur in heavier, unstable particles. Subatomic particles that make up protons and neutrons
Definition: energy from nuclear fission or fusion: the energy released by nuclear fission or fusion
It splits light up into a frequency spectrum.
It loses mass.
F=v/&
0.02kg
special values
A range of wavelengths of light that increases from one end to the other
The wavelength is 671 nm.
Radioactive decay is the spontaneous breakdown of a nucleus into smaller parts.
the electron energy levels
Each proton and neutron is made up of three quarks
A particle that binds quarks to one another. (Apex)
(Explanation): remember that if an atom has less than 20 protons, the closer the number of neutrons and protons are, the more stable it is. Since 10 is closest to 12 out of these options, D is the correct answer.
