{"query": "Fluorine (F) — element 9", "count": 20, "results": [{"id": "card_ref_el_009", "title": "Fluorine (F) — element 9", "shelf": "chemistry", "surface": "secular", "snippet": "Atomic number 9. Symbol F. Standard atomic weight 18.998403163. The fluorine atom carries 9 protons in its nucleus; its place in the periodic table is fixed by that count. Verified reference data.", "authority_tier": "reference", "source": "Verified reference — chemistry", "readable": false, "generated": false}, {"id": "card_src_fed_nasa_techdoc_19700018655", "title": "Lithium-fluorine-hydrogen propellant investigation Final report", "shelf": "science", "surface": "secular", "snippet": "Lithium-fluorine-hydrogen propellant investigation Final report. A United States federal publication, public domain (17 USC 105). The full text (330,290 bytes) is held on the ark; waybill sha256 86d1e", "authority_tier": "reference", "source": "NASA technical documents (PD, 17 USC 105)", "readable": true, "generated": false}, {"id": "card_src_etym_fluorine", "title": "fluorine", "shelf": "etymology", "surface": "secular", "snippet": "fluorine: etymology (Webster 1913) — n.: [NL. fluorina: cf. G. fluorin, F. fluorine. So called from its occurrence in the mineral fluorite.]. From Webster's Revised Unabridged Dictionary (1913), publi", "authority_tier": "reference", "source": "Webster's Revised Unabridged Dictionary (1913), Project Gutenberg eBook #29765 — public domain", "readable": true, "generated": false}, {"id": "card_src_word_fluorine", "title": "fluorine", "shelf": "dictionary", "surface": "secular", "snippet": "fluorine: (noun) a nonmetallic univalent element belonging to the halogens; usually a yellow irritating toxic flammable gas; a powerful oxidizing agent; recovered from fluorite or cryolite or fluorapa", "authority_tier": "reference", "source": "WordNet 3.0, Princeton University (WordNet License)", "readable": false, "generated": false}, {"id": "card_src_openstax_chemistry_18_11_occurrence_preparation_and_propert_3ea75b92", "title": "18.11 Occurrence, Preparation, and Properties of Halogens — Chemistry", "shelf": "chemistry", "surface": "secular", "snippet": "18.11\n\nOccurrence, Preparation, and Properties of Halogens\n\nLearning ObjectivesBy the end of this section, you will be able to:\n\nDescribe the preparation, properties, and uses of halogens\n\nDescribe th", "authority_tier": "reference", "source": "OpenStax: Chemistry (CC-BY 4.0)", "readable": false, "generated": false}, {"id": "card_src_openstax_chemistry_2e_18_11_occurrence_preparation_and_propert_8868d0bc", "title": "18.11 Occurrence, Preparation, and Properties of Halogens — Chemistry 2e", "shelf": "chemistry", "surface": "secular", "snippet": "18.11\n\nOccurrence, Preparation, and Properties of Halogens\n\nLearning Objectives\nBy the end of this section, you will be able to:\n\nDescribe the preparation, properties, and uses of halogens\n\nDescribe t", "authority_tier": "reference", "source": "OpenStax: Chemistry 2e (CC-BY 4.0)", "readable": false, "generated": false}, {"id": "card_src_openstax_chemistry_atoms_first_18_11_occurrence_preparation_and_propert_3ea75b92", "title": "18.11 Occurrence, Preparation, and Properties of Halogens — Chemistry: Atoms First", "shelf": "chemistry", "surface": "secular", "snippet": "18.11\n\nOccurrence, Preparation, and Properties of Halogens\n\nLearning ObjectivesBy the end of this section, you will be able to:\n\nDescribe the preparation, properties, and uses of halogens\n\nDescribe th", "authority_tier": "reference", "source": "OpenStax: Chemistry: Atoms First (CC-BY 4.0)", "readable": false, "generated": false}, {"id": "card_src_openstax_chemistry_atoms_first_2e_18_11_occurrence_preparation_and_propert_8868d0bc", "title": "18.11 Occurrence, Preparation, and Properties of Halogens — Chemistry: Atoms First 2e", "shelf": "chemistry", "surface": "secular", "snippet": "18.11\n\nOccurrence, Preparation, and Properties of Halogens\n\nLearning Objectives\nBy the end of this section, you will be able to:\n\nDescribe the preparation, properties, and uses of halogens\n\nDescribe t", "authority_tier": "reference", "source": "OpenStax: Chemistry: Atoms First 2e (CC-BY 4.0)", "readable": false, "generated": false}, {"id": "card_src_word_halogen", "title": "halogen", "shelf": "dictionary", "surface": "secular", "snippet": "halogen: (noun) any of five related nonmetallic elements (fluorine or chlorine or bromine or iodine or astatine) that are all monovalent and readily form negative ions", "authority_tier": "reference", "source": "WordNet 3.0, Princeton University (WordNet License)", "readable": false, "generated": false}, {"id": "card_src_word_atomic_number_9", "title": "atomic number 9", "shelf": "dictionary", "surface": "secular", "snippet": "atomic number 9: (noun) a nonmetallic univalent element belonging to the halogens; usually a yellow irritating toxic flammable gas; a powerful oxidizing agent; recovered from fluorite or cryolite or f", "authority_tier": "reference", "source": "WordNet 3.0, Princeton University (WordNet License)", "readable": false, "generated": false}, {"id": "card_src_word_f", "title": "f", "shelf": "dictionary", "surface": "secular", "snippet": "f: (noun) a degree on the Fahrenheit scale of temperature — syn: degree Fahrenheit · (noun) a nonmetallic univalent element belonging to the halogens; usually a yellow irritating toxic flammable gas; ", "authority_tier": "reference", "source": "WordNet 3.0, Princeton University (WordNet License)", "readable": false, "generated": false}, {"id": "card_src_openstax_organic_chemistry_6_3_polar_reactions_1b6136f1", "title": "6.3 Polar Reactions — Organic Chemistry", "shelf": "chemistry", "surface": "secular", "snippet": "6.3\n\nPolar Reactions\n\n6.3 • Polar Reactions\n\nPolar reactions occur because of the electrical attraction between positively polarized and negatively polarized centers on functional groups in molecules.", "authority_tier": "reference", "source": "OpenStax: Organic Chemistry (CC-BY 4.0)", "readable": false, "generated": false}, {"id": "card_src_etym_hydrofluosilicic", "title": "hydrofluosilicic", "shelf": "etymology", "surface": "secular", "snippet": "hydrofluosilicic: etymology (Webster 1913) — a.: [Hydro-, 2 + fluorine + silicic.]. From Webster's Revised Unabridged Dictionary (1913), public domain.", "authority_tier": "reference", "source": "Webster's Revised Unabridged Dictionary (1913), Project Gutenberg eBook #29765 — public domain", "readable": true, "generated": false}, {"id": "card_src_etym_phthor", "title": "phthor", "shelf": "etymology", "surface": "secular", "snippet": "phthor: etymology (Webster 1913) — n.: [F. phthore, Gr. (Old Chem.) Defn: Fluorine. (Written also phthor.)]. From Webster's Revised Unabridged Dictionary (1913), public domain.", "authority_tier": "reference", "source": "Webster's Revised Unabridged Dictionary (1913), Project Gutenberg eBook #29765 — public domain", "readable": true, "generated": false}, {"id": "card_src_etym_phlogopite", "title": "phlogopite", "shelf": "etymology", "surface": "secular", "snippet": "phlogopite: etymology (Webster 1913) — n.: [Gr. (Min.) Defn: A kind of mica having generally a peculiar bronze-red or copperlike color and a pearly luster. It is a silicate of aluminia, with magnesia,", "authority_tier": "reference", "source": "Webster's Revised Unabridged Dictionary (1913), Project Gutenberg eBook #29765 — public domain", "readable": true, "generated": false}, {"id": "card_theory_vsepr_theory", "title": "VSEPR theory (molecular geometry)", "shelf": "theories", "surface": "secular", "snippet": "VSEPR theory (molecular geometry) — an engine domain that can touch it: molecular_geometry. Calibration: seals — shapes and bond angles predict directly. Valence Shell Electron Pair Repulsion: electro", "authority_tier": "reference", "source": "The Theory Assay — calibrated, not judged (docs/THEORY_CATALOG.md)", "readable": false, "generated": false}, {"id": "card_src_etym_dissolution", "title": "dissolution", "shelf": "etymology", "surface": "secular", "snippet": "dissolution: etymology (Webster 1913) — n.: [OE. dissolucioun dissoluteness, F. dissolution, fr. L. dissolutio, fr. dissolvere. See Dissolve.]. From Webster's Revised Unabridged Dictionary (1913), pub", "authority_tier": "reference", "source": "Webster's Revised Unabridged Dictionary (1913), Project Gutenberg eBook #29765 — public domain", "readable": true, "generated": false}, {"id": "card_span_edf3b9c81714", "title": "When the liquid will drop in a continuous thread from the stirrer", "shelf": "sources", "surface": "secular", "snippet": "When  the  liquid  will  drop  in  a  continuous  thread  from \nthe  stirrer,  and  jellifies  on  cooling,  it  is  ready  for  the \n^^  cutting\"  process.  This  consists  in  throwing  in  salt  by", "authority_tier": "primary_pd", "source": "A treatise on chemistry applied to the manufacture of soap and candles; being a thorough exposition, in all their minuti", "readable": true, "generated": false}, {"id": "card_alm_assessment_popper_falsifiability_is_the_method", "title": "Almanac: Falsifiability -- a theory must forbid something; the fork -- demarcation over-applied banishes the metaphysics it cannot test", "shelf": "almanac", "surface": "secular", "snippet": "SITUATION\n  THE KERNEL: Popper got the deep thing right, and it is the engine's own heartbeat. A claim with content forbids something; it sticks its neck out; it can be refuted by a single counterexam", "authority_tier": "reference", "source": "The Almanac — verified-only practical wisdom (sealed)", "readable": false, "generated": false}, {"id": "card_src_pron_dissolves", "title": "dissolves", "shelf": "pronunciation", "surface": "secular", "snippet": "dissolves: pronounced (ARPABET) D IH0 Z AA1 L V Z. From the CMU Pronouncing Dictionary — the standard machine-readable pronunciations of North American English.", "authority_tier": "reference", "source": "CMU Pronouncing Dictionary (cmudict) — BSD-2-Clause, Carnegie Mellon", "readable": false, "generated": false}], "house": {"door": "FIND", "kind": "cards", "trail": "results", "seal": null, "next_step": {"do": "open the top card", "door": "FIND", "tool": "card_get", "params": {"id": "card_ref_el_009"}}, "ends": "a verdict or a card · the trail · a seal · one next step"}}