{"id": "card_floor_physical_chemistry", "kind": "note", "title": "Physical chemistry — rate, equilibrium, acid-base, redox", "body": "Deeper in chemistry: the laws that make it predictive. Kinetics (how fast), equilibrium (the balance point, Delta G = -RT ln K), acid-base (pKa + pKb = 14), and electrochemistry (the cell potential). Four pillars rest on chemistry (kinetics, acid-base), thermodynamics (equilibrium), and Maxwell (electrochemistry - redox is electrons moving). The laws that turn chemistry from a description into a prediction. The stick (stick_physical_chemistry_rate_equilibrium_acid_base_redox) seals one number per pillar (tools/seed_physical_chemistry.py).", "source": {"label": "Narrow Highway — physical chemistry", "url": "", "authority_tier": "engine_derived", "ref": "stick_physical_chemistry_rate_equilibrium_acid_base_redox"}, "shelf": "codex", "box": "physical_chemistry", "bands": ["floor", "physical chemistry", "kinetics", "equilibrium", "electrochemistry", "one map"], "subject": "Physical chemistry — rate, equilibrium, acid-base, redox", "connections": [{"to_card_id": "card_pchem_kinetics", "relationship": "has_part", "evidence": "a branch of physical chemistry (Kinetics)"}, {"to_card_id": "card_pchem_equilibrium", "relationship": "has_part", "evidence": "a branch of physical chemistry (Equilibrium)"}, {"to_card_id": "card_pchem_acid_base", "relationship": "has_part", "evidence": "a branch of physical chemistry (Acid-base)"}, {"to_card_id": "card_pchem_electrochemistry", "relationship": "has_part", "evidence": "a branch of physical chemistry (Electrochemistry)"}, {"to_card_id": "card_floor_chemistry", "relationship": "connects_at", "evidence": "physical chemistry stands on the chemistry floor"}, {"to_card_id": "card_k_floor_of_discovery", "relationship": "part_of", "evidence": "the predictive laws of chemistry on the one map"}, {"to_card_id": "card_earth_radiometric_dating", "relationship": "connects_at", "evidence": "radiometric dating is first-order decay - the half-life sealed on physical chemistry"}, {"to_card_id": "card_mind_the_neuron", "relationship": "connects_at", "evidence": "the membrane potential is a Nernst voltage - electrochemistry"}], "author": "engine", "created_at": 0.0, "updated_at": 0.0, "visibility": "public", "lifecycle_stage": "public", "volatility": "permanent", "surface": "secular", "generated": false, "call": "codex.physical.chemistry", "facets": {"subject": ["electrochemistry", "equilibrium", "floor", "kinetics", "one map", "physical chemistry"]}, "presentation": {"glyph": "•", "kind_label": "physical chemistry", "by": "Narrow Highway — physical chemistry", "authority": "engine_derived", "posted": "", "standing": ""}, "neighbors": [{"id": "card_pchem_kinetics", "title": "Kinetics — how fast", "relationship": "has part", "why": "a branch of physical chemistry (Kinetics)", "href": "/card/card_pchem_kinetics", "resolved": true}, {"id": "card_pchem_equilibrium", "title": "Equilibrium — Delta G = -RT ln K", "relationship": "has part", "why": "a branch of physical chemistry (Equilibrium)", "href": "/card/card_pchem_equilibrium", "resolved": true}, {"id": "card_pchem_acid_base", "title": "Acid-base — pKa + pKb = 14", "relationship": "has part", "why": "a branch of physical chemistry (Acid-base)", "href": "/card/card_pchem_acid_base", "resolved": true}, {"id": "card_pchem_electrochemistry", "title": "Electrochemistry — the cell potential", "relationship": "has part", "why": "a branch of physical chemistry (Electrochemistry)", "href": "/card/card_pchem_electrochemistry", "resolved": true}, {"id": "card_floor_chemistry", "title": "Chemistry — quantum mechanics applied, the periodic table", "relationship": "connects at", "why": "physical chemistry stands on the chemistry floor", "href": "/card/card_floor_chemistry", "resolved": true}, {"id": "card_k_floor_of_discovery", "title": "The Floor of Discovery — one floor, and by its design the fear of God", "relationship": "part of", "why": "the predictive laws of chemistry on the one map", "href": "/card/card_k_floor_of_discovery", "resolved": true}, {"id": "card_earth_radiometric_dating", "title": "Radiometric dating — deep time from decay", "relationship": "connects at", "why": "radiometric dating is first-order decay - the half-life sealed on physical chemistry", "href": "/card/card_earth_radiometric_dating", "resolved": true}, {"id": "card_mind_the_neuron", "title": "The neuron — the membrane potential", "relationship": "connects at", "why": "the membrane potential is a Nernst voltage - electrochemistry", "href": "/card/card_mind_the_neuron", "resolved": true}], "house": {"door": "FIND", "kind": "card", "trail": "connections", "seal": "/card/card_floor_physical_chemistry", "next_step": {"do": "follow a connection: what this card rests on, and what rests on it", "door": "FIND", "tool": "card_connections", "params": {"id": "card_floor_physical_chemistry"}}, "ends": "a verdict or a card · the trail · a seal · one next step"}}