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BeorioGoates 2
2nd physical science test
| Question | Answer |
|---|---|
| rank types of electromagnetic radiation according to wavelength | gamma, x ultraviolet, infrared, microwave, radio |
| bright lines separated by dark areas | interference patterns |
| fluid properties but in which positive and negative charges move independently | plasma |
| all materials become plasma if. . . | they are heated to a high enough temperature |
| is nitrogen or water denser in liquid state? | nitrogen |
| which have a lower internal energy, solids or gases? | solids |
| rutherford model | solar system model |
| Thompson's gas discharge experiments provide direct experimental evidence for the idea that. . . | all atoms are made of charged particles |
| rutherford's gold foil experiment proved. . . | that the atom has a nucleus |
| Gases emit light when they are energized by an electrical discharge. The light results . . . | . . when an electron "jumps" from one energy level down to a lower energy level. |
| can electrons form interference patterns, just like light? | you bet |
| if moving slowly enough, small objects can have wavelengths that reach macroscopic dimensions? | fer sure |
| spin points in the same direction as. . . | the orbital's magnetic field |
| elements that occur in the same row of the periodic table are organized into. . . | periods |
| bohr model | modified solar system model |
| thompson model | positive plum pudding with negative electrons |
| probability waves | tell us the probability of where electrons are likely to be detected |
| probability curves | normal curve |
| shear waves | transverse waves caused by shearing stress; can move through each state of matter |
| compressional wave | longitudinal wave driven by pressure |
| longitudinal wave | when the molecules vibrate in the same direction as the motion of the wave |
| surface waves | contain both longitudinal and transverse motions |
| amplitude | the maximum distance a particle moves from its resting place |
| wave speed | the rate that the disturbance travels through the medium |
| photoelectric effect | ejected electrons have more energy if the light had a shorter wavelength |
| brownian motion | random moving of particles suspended in a fluid (a liquid or a gas) resulting from their bombardment by the fast-moving atoms |
| as atomic number goes up, atomic volume. . . | goes up |
| as atomic number goes up, inoization energy goes. . | down |
| on the periodic table, inozation energy goes up as you move. . . | up and to the right |
| on the periodic table, ionization energy goes up as you move. . . | down and to the left |
| what are the first five orbitals in order? | 1s, 2s, 2p, 3s, 3p |
| atom is full when it has how many electrons? | 8 |
| pauli-exclusion principle | to occupy the same space particles must have opposite spins |
| helium belongs in which valence electron group, s, p, d, or f? | s |
| what is right about the continuous model? | 4 states of matter |
| how was the continuous model proved incorrect? | brownian motion |
| what was wrong with the molecular model? | did not discover charge |
| how was the molecular model disproved? | thompson's gas discharge experiment |
| how was thompson's model proved incorrect | rutherford's gold foil experiment |
| what is wrong with rutherford's model? | orbiting electrons, can't explain light/colors |
| what is right about Bohr's model? | energy levels for electrons |
| what is wrong with Bohr's model? | still has orbits on electrons, only works for atoms with one electron |
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