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| # | Thing | Description | Topic | For | Against | Net | |
|---|---|---|---|---|---|---|---|
| 751 |  | Permian | Sixth and last period of the Paleozoic Era | Physical sciences | 0 | 0 | 0 |
| 752 |  | Permian–Triassic extinction event | Earth's most severe extinction event | Physical sciences | 0 | 0 | 0 |
| 753 |  | Petrology | Study of rocks in geology | Physical sciences | 0 | 0 | 0 |
| 754 |  | Phanerozoic | Fourth and current eon of the geological timescale | Physical sciences | 0 | 0 | 0 |
| 755 |  | Phase (matter) | Region of uniform physical properties | Physical sciences | 0 | 0 | 0 |
| 756 |  | Phase diagram | Chart used to show conditions at which physical phases of a substance occur | Physical sciences | 0 | 0 | 0 |
| 757 |  | Phase transition | Physical process of transition between basic states of matter | Physical sciences | 0 | 0 | 0 |
| 758 |  | Phenol | Organic compound (C6H5OH) | Physical sciences | 0 | 0 | 0 |
| 759 |  | Phosphoric acid | Chemical compound (PO(OH)3) | Physical sciences | 0 | 0 | 0 |
| 760 |  | Phosphorus | Chemical element with atomic number 15 (P) | Physical sciences | 0 | 0 | 0 |
| 761 |  | Photochemistry | Sub-discipline of chemistry | Physical sciences | 0 | 0 | 0 |
| 762 |  | Photoelectric effect | Emission of electrons when electromagnetic radiation hits a material | Physical sciences | 0 | 0 | 0 |
| 763 |  | Photometry (astronomy) | Determination of light intensities of astronomical bodies | Physical sciences | 0 | 0 | 0 |
| 764 | Photon | Elementary particle or quantum of light | Physical sciences | 0 | 0 | 0 | |
| 765 |  | Physical chemistry | Physics applied to chemical systems | Physical sciences | 0 | 0 | 0 |
| 766 |  | Physical cosmology | Branch of physics that studies mathematical models of the universe | Physical sciences | 0 | 0 | 0 |
| 767 | Physics | Scientific field of study | Physical sciences | 0 | 0 | 0 | |
| 768 |  | Physics beyond the Standard Model | Theories trying to extend known physics | Physical sciences | 0 | 0 | 0 |
| 769 |  | Pink | Pale tint of red | Physical sciences | 0 | 0 | 0 |
| 770 |  | Pinwheel Galaxy | Galaxy in the constellation Ursa Major | Physical sciences | 0 | 0 | 0 |
| 771 |  | Plain | Expanse of land that is mostly flat | Physical sciences | 0 | 0 | 0 |
| 772 |  | Planck units | Units defined only by physical constants | Physical sciences | 0 | 0 | 0 |
| 773 |  | Planet | Large, round non-stellar astronomical object | Physical sciences | 0 | 0 | 0 |
| 774 |  | Planetary nebula | Type of emission nebula created by dying red giants | Physical sciences | 0 | 0 | 0 |
| 775 |  | Planetary system | Set of non-stellar objects in orbit around a star | Physical sciences | 0 | 0 | 0 |
| 776 |  | Plasma (physics) | State of matter | Physical sciences | 0 | 0 | 0 |
| 777 |  | Plasticity (physics) | Non-reversible deformation of a solid material in response to applied forces | Physical sciences | 0 | 0 | 0 |
| 778 |  | Plate tectonics | Movement of Earth's lithosphere | Physical sciences | 0 | 0 | 0 |
| 779 |  | Plateau | Highland area, usually of relatively flat terrain | Physical sciences | 0 | 0 | 0 |
| 780 |  | Platinum | Chemical element with atomic number 78 (Pt) | Physical sciences | 0 | 0 | 0 |
| 781 |  | Pleiades | Star cluster in the constellation of Taurus | Physical sciences | 0 | 0 | 0 |
| 782 |  | Pluto | Largest dwarf planet in the Solar System | Physical sciences | 0 | 0 | 0 |
| 783 |  | Plutonium | Chemical element with atomic number 94 (Pu) | Physical sciences | 0 | 0 | 0 |
| 784 |  | Polar vortex | Persistent cold-core low-pressure area that circles one of the poles | Physical sciences | 0 | 0 | 0 |
| 785 |  | Polaris | Northern pole-star; brightest star in Ursa Minor | Physical sciences | 0 | 0 | 0 |
| 786 |  | Polarization (waves) | Property of waves that can oscillate with more than one orientation | Physical sciences | 0 | 0 | 0 |
| 787 |  | Polder | Reclaimed land | Physical sciences | 0 | 0 | 0 |
| 788 |  | Polonium | Chemical element with atomic number 84 (Po) | Physical sciences | 0 | 0 | 0 |
| 789 |  | Polyester | Category of polymers, in which the monomers are joined together by ester links | Physical sciences | 0 | 0 | 0 |
| 790 |  | Polyethylene | Most common thermoplastic polymer | Physical sciences | 0 | 0 | 0 |
| 791 |  | Polymer | Substance composed of macromolecules with repeating structural units | Physical sciences | 0 | 0 | 0 |
| 792 | Polymer chemistry | Chemistry subdiscipline | Physical sciences | 0 | 0 | 0 | |
| 793 |  | Polypropylene | Thermoplastic polymer | Physical sciences | 0 | 0 | 0 |
| 794 |  | Polyvinyl chloride | Common synthetic polymer | Physical sciences | 0 | 0 | 0 |
| 795 |  | Pond | Relatively small body of standing water | Physical sciences | 0 | 0 | 0 |
| 796 |  | Positron | Antiparticle of the electron | Physical sciences | 0 | 0 | 0 |
| 797 |  | Potassium | Chemical element with atomic number 19 (K) | Physical sciences | 0 | 0 | 0 |
| 798 |  | Potassium hydroxide | Inorganic compound (KOH) | Physical sciences | 0 | 0 | 0 |
| 799 |  | Potassium nitrate | Chemical compound | Physical sciences | 0 | 0 | 0 |
| 800 |  | Potential energy | Energy held by an object because of its position relative to other objects | Physical sciences | 0 | 0 | 0 |
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