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for electromagnetic radiation, c (speed of light) equals
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the speed of an electromagnetic wave is equal to the product of its wavelength and its
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chemistry
exam
| Question | Answer |
|---|---|
| for electromagnetic radiation, c (speed of light) equals | frequency times wavelength |
| the speed of an electromagnetic wave is equal to the product of its wavelength and its | frequency |
| in SI, the frequency of electromagnetic radiation is measured in | hertz |
| the distance between between two successive peaks on a wave is its | wavelength |
| what is the symbol for wavelength | lambda |
| max plank proposed that a hot object radiated energy in small, specific amounts called | quanta |
| the energy of a photon, or quantum, is related to its | frequency |
| a bright-line spectrum of an atom is caused by the energy released when electrons | fall to a lower energy level |
| for an electron in an atom to change from the ground state to an excited state, | energy must be absorbed |
| bohr's theory helped explain why | excited hydrogen gas gives off certain colors of light |
| according to bohr's theory, an excited atom would | radiate energy |
| the drop of an electron from a high energy level to the ground state in a hydrogen atom would be most closely associated with | high-frequency radiation |
| the electron in a hydrogen atom has its lowest total energy when the electron is in its | ground state |
| which model of the atom explains why excited hydrogen gas gives off certain colors of light | the bohr model |
| a hertz is the same as | 1/second |
| which wave property expresses how often the wave oscillates up and down | frequency |
| which of the following equations represents the relationship between energy and frequency of radiation | E=hv |
| the photoelectric effect was explained by | Einstien |
| which color os visible light has the highest frequency | violet |
| which of the following has the lowest wavelength | infarred radiation |
| of the following, _____ radiation has the shortest wavelength | x-ray |
| what is the frequency of light that has a wavelength of 1.23 x 10 to the negative 6 | 2.44 x 10 to the 16 |
| a spectrum containing only specific wavelengths is called a ____ spectrum | line |
| the brightness, or intensity, of light depends on its | amplitude |
| light has the properties of | both particles and waves |
| state what is meant by Heisenberg's uncertainty principle | his uncertainty principal states that you can know the position and the momentum of an object cannot be measured and known exactly at the same time |
| what is the difference between a line spectrum and a continuous spectrum | a line spectrum consists of only specific wavelengths where as a continuous spectrums contains all of them |
| list the major regions of the electromagnetic spectrum in order of increasing wavelength | x-rays, gamma rays, ultraviolet rays, visible light, inferred, microwaves, and radio waves |
| chemistry is best defined as the study of | all substances and the changes they undergo |
| the amount of heat needed to raise the temperature of 1 gram of water by 1 Celsius degree is called a | calorie |
| which of the following is a physical property | density |
| element symbols consist of | one or two letters |
| what is the SI base unit for mass | kilogram |
| which of the following is a prefix that makes the unit larger | kilo |
| which of the following is a physical change | crushing |
| in which of the following is the zero non significant | 0.15 |
| which of the following is an example of a heterogeneous mixture | sand in water |
| what is an example of a chemical property | tendency to rust |
| how many sig figs are in 2.005 | 4 |
| how many sig figs are there in 1.9800 | 5 |
| dimensional analysis is a technique of | converting between units |
| which equation correctly relates the Celsius and Kelvin scales | C=K - 273 |
| the precent error is equal to 100 percent multiplied by | absolute value of measured value- accepted value over accepted value |
| the beta decay of Kr produces | Rb |
| two atoms are isotopes if they contain | the same number of protons but different numbers of neutrons |
| an atom of an element with atomic number 48 and mass number 120 contains | 48 protons, 48 electrons, and 72 neutrons |
| the number of neutrons in the nucleus of an atom can be calculated by | subtracting the number of protons from the mass number |
| the experiment that revealed that atoms contained electrons involved the use of | cathode ray tube |
| list the three rules that govern the filling of atomic orbitals by electrons | Aufbau Pauli exclusion Hinds |
| how many electrons does the s-sublevel have | 2 |
| P-sublevel has ___ electrons | 6 |
| D-sublevel has ___ electrons | 10 |
| F-sublevel has ___ electrons | 14 |
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annalebrun