Emission spectra Flashcards

1
Q

what happens when metal atoms are heated

A

they produce coloured light

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2
Q

what do flame tests show

A

some metallic elements can be identified by the characteristic colour produced when a sample is passed through a flame

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3
Q

what is the line/emission spectra

A

if the light from the flame test is passed through a prism, it produces a spectrum with a black background and a number of coloured lines

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4
Q

what is an excited state

A

when an atom is heated and the electron(s) absorb ennergy and jump to a higher energy level/shell

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5
Q

why do metals produce coloured light when heated

A

when the electrons return to a ground state, they release a fixed amount of energy as light

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6
Q

what is a ground state

A

the lowest energy state of an atom

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7
Q

what is electron configuration

A

the arrangement of electrons around the nucleus

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