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Chemistry

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Martina Kuhic

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Cards in this guide (19)
What is a flame test

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

What is a prism

something that splits up light into different colors ! apx :)

What is the energy J of photon with a wavelength of 601nm

what is the energy of J of photon with a wavelength of 601nm?

Which of the following describes something that is quantized

It has a specific set of possible values.

What transition energy corresponds to an absorption line at 502 nm

3.96 10-19 j

What information does a flame test provide

The emission spectrum of an element

Which equation shows how frequency is related to velocity and wavelength

F=v/&

What best defines a spectrum

The range of values of some property

What does it mean for an element to undergo transmutation

an element becomes a totally different element..

What could the fourth quantum number of a 2s2 electron be

ms= +1/2

What does binding energy measure

The energy used to hold the nucleus together

What frequency corresponds to an absorption line at 502 nm

5.98 x 10^14 Hz

How is the mass defect determined

The mass of a nucleus is subtracted from the sum of the masses of its individual components.

What is the wavelength of a light of frequency 4.47 X 1014 Hz

The wavelength is 671 nm.

What is the best definition of radioactive decay

Radioactive decay is the spontaneous breakdown of a nucleus into smaller parts.

What is the energy of a photon that emits a light frequency of 7.21 x 1014 Hz

4.78 x 10-19

How much energy is released is a sample loses 0.05 kg mass through radioactive decay

4.5 × 1015 J

What determines an elements emission spectrum

the electron energy levels

Which of the following nuclei would be the most stable A. 10 protons , 14 neutrons B. 10 protons, 15 neutrons C. 10 protons, 13 neutrons D. 10 protons, 12 neutrons.

(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.

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