Chem Mod 7 Word Scramble
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Question | Answer |
Atomic number | How many protons (and therefore electrons) are in an atom |
Isotopes | Atoms with the same number of protons but different numbers of neutrons |
Mass number | The total number of protons and neutrons in an atom (e.g. ¹²C) |
"Plum pudding" model of an atom | Positively charged "pudding" with electron "plums" scattered throughout |
Planetary (Rutherford's) model of an atom | Protons in the center (nucleus) with electrons orbiting about |
Physical constant | A measurable quantity in nature that does not change |
Hertz (Hz) | 1/second |
Particle/Wave Duality Theory | The theory that sometimes light sometimes behaves as a particle and sometimes behaves as a wave |
Wavelength | The distance between the crests (or troughs) of a wave |
Amplitude | A measure of the height of the crests or the depths of the troughs on a wave |
Frequency formula | f = c/λ where f = frequency (Hz) c = the speed of light (m/s) λ = wavelength (m) |
Speed of light | 3.0 x 10⁸ m/s |
Nano | 10⁻⁹ |
As a light wave's frequency increases, its energy ... | increases |
Relationship between energy and frequency | E = h⋅f where E = energy (Joules) f = frequency h = 6.63 x 10⁻³⁴ J/Hz (Planck's constant) |
Quantum mechanical model | Electrons orbit the nucleus in clouds (orbitals). Each orbital can hold two electrons |
s orbital | - spherical - 1s, 2s, 3s, etc. |
p orbital | - dumb-bell shaped - 2p, 3p, etc. - each energy level has 3 different p orbitals (x, y, z) |
d orbital | - complex shape - 3d, 4d, etc. - 5 different d orbitals for each energy level |
In the periodic table, the row tells you ... | ... what energy level the last electron is in |
In the periodic table, the first two columns have their last electron ... | ... in an s orbital (including He) |
In the periodic table, the middle 10 columns have their last electron ... | ... in a d orbital (energy level is ONE LESS than the row) |
In the periodic table, the last 6 columns have their last electron ... | ... in a p orbital |
Created by:
thomas.macri
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