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Physics Stuff
Physics Quiz
Question | Answer |
---|---|
What do atomic theories explain? | Solids, Liquids, and Gasses |
What did John Dalton research? | Atoms and Molecules |
What did Hooke research? | The pressure and temperature of gasses as a result of atomic impacts |
What did Avogadro find? | A constant (6.022 × 10^23) that was the number of atoms in a mole |
What did Brown study? | The random motion of small objects (pollen grains) suspended in water |
What did Thomson discover/study? | The electron |
What does the word "atom" mean? | Uncuttable |
What did John Dalton make? | The original table of economic weights |
What did Becquerel discover? | Radioactive atoms |
What is the range of wavelengths of visible light in Angstroms? | 4000-7000 |
What is the size of one atom? | 1.0*10^-10 meters= 1 Angstrom |
What did Thomson do? | He studied atoms and electrons using a Cathode Ray tube and magnetic fields |
What were the two main models of the atom? | The Plum Pudding Model and The Planetary Model |
What two main things did Rutherford research? | Alpha particle scattering and backwards deflection |
What gives the "fingerprint" of an element? | An element's atomic spectra |
If an element is missing most of the basic colors from the atomic spectra, then what type of spectrum is it? | Emission Spectrum |
If an element is missing very little of the basic colors from the atomic spectra, then what type of spectrum is it? | Absorption Spectrum |
What charge does an atom have? | No charge (neutral) |
What charge does an ion have? | (+) or (-) |
What charge is the main mass of an atom? | (+) |
What do "excited" atoms produce (atoms with vibrating electrons)? | A unique spectrum of light |
What is radiation in an atom caused by? | The atom's accelerated charges |
What is the problem with the Planetary Model of an atom? | The electrons circling the atom are accelerating and spiraling around the atom so fast that they would hit the atom instantly; very unstable |
What is the problem with the Plum Pudding Model of an atom? | There was no configuration that could be stable |