{"query": "Boron (B) — element 5", "count": 20, "results": [{"id": "card_ref_el_005", "title": "Boron (B) — element 5", "shelf": "chemistry", "surface": "secular", "snippet": "Atomic number 5. Symbol B. Standard atomic weight 10.81. The boron atom carries 5 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_theory_law_of_the_minimum", "title": "Liebig's law of the minimum (what actually limits growth)", "shelf": "theories", "surface": "secular", "snippet": "Liebig's law of the minimum (what actually limits growth) — an engine domain that can touch it: soil_science. Calibration: seals — nutrient ratios and deficiency thresholds compute. Growth is limited ", "authority_tier": "reference", "source": "The Theory Assay — calibrated, not judged (docs/THEORY_CATALOG.md)", "readable": false, "generated": false}, {"id": "card_pd_8b201c4acef0", "title": "Investigation of boron in armor plate. Influence of variations in boron and nickel on some propertie", "shelf": "sources", "surface": "secular", "snippet": "Investigation of boron in armor plate. Influence of variations in boron and nickel on some properties of experimental steels containing 0.3 \n\nA public-domain source: Library of Congress — http://www.l", "authority_tier": "primary_pd", "source": "Library of Congress", "readable": true, "generated": false}, {"id": "card_src_openstax_biology_2e_chapter_summary_42cb1097", "title": "Chapter Summary — Biology 2e", "shelf": "biology", "surface": "secular", "snippet": "Chapter Summary\n\n31.1\n\nNutritional Requirements of Plants\n\nPlants can absorb inorganic nutrients and water through their root system, and carbon dioxide from the environment. The combination of organi", "authority_tier": "reference", "source": "OpenStax: Biology 2e (CC-BY 4.0)", "readable": false, "generated": false}, {"id": "card_src_openstax_biology_chapter_summary_c7213441", "title": "Chapter Summary — Biology", "shelf": "biology", "surface": "secular", "snippet": "Chapter Summary\n\n31.1\n\nNutritional Requirements of Plants\n\nPlants can absorb inorganic nutrients and water through their root system, and carbon dioxide from the environment. The combination of organi", "authority_tier": "reference", "source": "OpenStax: Biology (CC-BY 4.0)", "readable": false, "generated": false}, {"id": "card_src_openstax_chemistry_2e_key_terms_7ca3ca23", "title": "Key Terms — Chemistry 2e", "shelf": "chemistry", "surface": "secular", "snippet": "Key Terms\n\nacid anhydride\ncompound that reacts with water to form an acid or acidic solution\n\nalkaline earth metal\nany of the metals (beryllium, magnesium, calcium, strontium, barium, and radium) occu", "authority_tier": "reference", "source": "OpenStax: Chemistry 2e (CC-BY 4.0)", "readable": false, "generated": false}, {"id": "card_src_openstax_chemistry_key_terms_53c9ad5a", "title": "Key Terms — Chemistry", "shelf": "chemistry", "surface": "secular", "snippet": "Key Terms\n\nacid anhydride\ncompound that reacts with water to form an acid or acidic solution\n\nalkaline earth metal\nany of the metals (beryllium, magnesium, calcium, strontium, barium, and radium) occu", "authority_tier": "reference", "source": "OpenStax: Chemistry (CC-BY 4.0)", "readable": false, "generated": false}, {"id": "card_src_openstax_chemistry_atoms_first_2e_key_terms_1873b6a8", "title": "Key Terms — Chemistry: Atoms First 2e", "shelf": "chemistry", "surface": "secular", "snippet": "Key Terms\n\nacid anhydride\ncompound that reacts with water to form an acid or acidic solution\n\nalkaline earth metal\nany of the metals (beryllium, magnesium, calcium, strontium, barium, and radium) occu", "authority_tier": "reference", "source": "OpenStax: Chemistry: Atoms First 2e (CC-BY 4.0)", "readable": false, "generated": false}, {"id": "card_src_openstax_chemistry_atoms_first_key_terms_939198a1", "title": "Key Terms — Chemistry: Atoms First", "shelf": "chemistry", "surface": "secular", "snippet": "Key Terms\n\nacid anhydride\ncompound that reacts with water to form an acid or acidic solution\n\nalkaline earth metal\nany of the metals (beryllium, magnesium, calcium, strontium, barium, and radium) occu", "authority_tier": "reference", "source": "OpenStax: Chemistry: Atoms First (CC-BY 4.0)", "readable": false, "generated": false}, {"id": "card_src_word_boron", "title": "boron", "shelf": "dictionary", "surface": "secular", "snippet": "boron: (noun) a trivalent metalloid element; occurs both in a hard black crystal and in the form of a yellow or brown powder — syn: B, atomic number 5", "authority_tier": "reference", "source": "WordNet 3.0, Princeton University (WordNet License)", "readable": false, "generated": false}, {"id": "card_src_openstax_chemistry_18_3_structure_and_general_properties_of_a9254810", "title": "18.3 Structure and General Properties of the Metalloids — Chemistry", "shelf": "chemistry", "surface": "secular", "snippet": "18.3\n\nStructure and General Properties of the Metalloids\n\nLearning ObjectivesBy the end of this section, you will be able to:\n\nDescribe the general preparation, properties, and uses of the metalloids\n", "authority_tier": "reference", "source": "OpenStax: Chemistry (CC-BY 4.0)", "readable": false, "generated": false}, {"id": "card_src_openstax_chemistry_2e_18_3_structure_and_general_properties_of_204b5ad5", "title": "18.3 Structure and General Properties of the Metalloids — Chemistry 2e", "shelf": "chemistry", "surface": "secular", "snippet": "18.3\n\nStructure and General Properties of the Metalloids\n\nLearning Objectives\nBy the end of this section, you will be able to:\n\nDescribe the general preparation, properties, and uses of the metalloids", "authority_tier": "reference", "source": "OpenStax: Chemistry 2e (CC-BY 4.0)", "readable": false, "generated": false}, {"id": "card_src_openstax_chemistry_atoms_first_18_3_structure_and_general_properties_of_a9254810", "title": "18.3 Structure and General Properties of the Metalloids — Chemistry: Atoms First", "shelf": "chemistry", "surface": "secular", "snippet": "18.3\n\nStructure and General Properties of the Metalloids\n\nLearning ObjectivesBy the end of this section, you will be able to:\n\nDescribe the general preparation, properties, and uses of the metalloids\n", "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_3_structure_and_general_properties_of_204b5ad5", "title": "18.3 Structure and General Properties of the Metalloids — Chemistry: Atoms First 2e", "shelf": "chemistry", "surface": "secular", "snippet": "18.3\n\nStructure and General Properties of the Metalloids\n\nLearning Objectives\nBy the end of this section, you will be able to:\n\nDescribe the general preparation, properties, and uses of the metalloids", "authority_tier": "reference", "source": "OpenStax: Chemistry: Atoms First 2e (CC-BY 4.0)", "readable": false, "generated": false}, {"id": "card_src_etym_ekabor_ekaboron", "title": "ekabor; ekaboron", "shelf": "etymology", "surface": "secular", "snippet": "ekabor; ekaboron: etymology (Webster 1913) — n.: [G., fr. Skr. one + G. bor, boron, E. boron.]. 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_word_atomic_number_5", "title": "atomic number 5", "shelf": "dictionary", "surface": "secular", "snippet": "atomic number 5: (noun) a trivalent metalloid element; occurs both in a hard black crystal and in the form of a yellow or brown powder — syn: boron, B", "authority_tier": "reference", "source": "WordNet 3.0, Princeton University (WordNet License)", "readable": false, "generated": false}, {"id": "card_src_word_davy", "title": "davy", "shelf": "dictionary", "surface": "secular", "snippet": "davy: (noun) English chemist who was a pioneer in electrochemistry and who used it to isolate elements sodium and potassium and barium and boron and calcium and magnesium and chlorine (1778-1829) — sy", "authority_tier": "reference", "source": "WordNet 3.0, Princeton University (WordNet License)", "readable": false, "generated": false}, {"id": "card_src_word_humphrey_davy", "title": "humphrey davy", "shelf": "dictionary", "surface": "secular", "snippet": "humphrey davy: (noun) English chemist who was a pioneer in electrochemistry and who used it to isolate elements sodium and potassium and barium and boron and calcium and magnesium and chlorine (1778-1", "authority_tier": "reference", "source": "WordNet 3.0, Princeton University (WordNet License)", "readable": false, "generated": false}, {"id": "card_src_etym_boron", "title": "boron", "shelf": "etymology", "surface": "secular", "snippet": "boron: etymology (Webster 1913) — n.: [See Borax.]. 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_word_sir_humphrey_davy", "title": "sir humphrey davy", "shelf": "dictionary", "surface": "secular", "snippet": "sir humphrey davy: (noun) English chemist who was a pioneer in electrochemistry and who used it to isolate elements sodium and potassium and barium and boron and calcium and magnesium and chlorine (17", "authority_tier": "reference", "source": "WordNet 3.0, Princeton University (WordNet License)", "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_005"}}, "ends": "a verdict or a card · the trail · a seal · one next step"}}