{"query": "Chlorine (Cl) — element 17", "count": 16, "results": [{"id": "card_ref_el_017", "title": "Chlorine (Cl) — element 17", "shelf": "chemistry", "surface": "secular", "snippet": "Atomic number 17. Symbol Cl. Standard atomic weight 35.45. The chlorine atom carries 17 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", "generated": false}, {"id": "card_src_word_chlorine_water", "title": "chlorine water", "shelf": "dictionary", "surface": "secular", "snippet": "chlorine water: (noun) an aqueous solution of chlorine used as a bleaching agent", "authority_tier": "reference", "source": "WordNet 3.0, Princeton University (WordNet License)", "generated": false}, {"id": "card_src_word_chlorine", "title": "chlorine", "shelf": "dictionary", "surface": "secular", "snippet": "chlorine: (noun) a common nonmetallic element belonging to the halogens; best known as a heavy yellow irritating toxic gas; used to purify water and as a bleaching agent and disinfectant; occurs natur", "authority_tier": "reference", "source": "WordNet 3.0, Princeton University (WordNet License)", "generated": false}, {"id": "card_n_6e7a5b14e556", "title": "The periodic table — the map of the elements", "shelf": "science", "surface": "secular", "snippet": "118 elements, ordered by proton count, and their properties RECUR in periods — the\nsingle most predictive table in science. Sealed in-domain: carbon is element 6, symbol C\n(https://narrowhighway.com/s", "authority_tier": "engine_derived", "source": "Concordance assay — 2026-07-09", "generated": false}, {"id": "card_src_drug_chlorine", "title": "Chlorine", "shelf": "medicine", "surface": "secular", "snippet": "CHLORINE: a HUMAN OTC DRUG, pellet given by the oral route.", "authority_tier": "reference", "source": "openFDA / FDA NDC Directory (public domain)", "generated": false}, {"id": "card_src_word_cl", "title": "cl", "shelf": "dictionary", "surface": "secular", "snippet": "cl: (noun) a common nonmetallic element belonging to the halogens; best known as a heavy yellow irritating toxic gas; used to purify water and as a bleaching agent and disinfectant; occurs naturally o", "authority_tier": "reference", "source": "WordNet 3.0, Princeton University (WordNet License)", "generated": false}, {"id": "card_src_drug_chlorine_dioxide", "title": "Chlorine Dioxide", "shelf": "medicine", "surface": "secular", "snippet": "chlorine dioxide: a HUMAN OTC DRUG, liquid given by the topical route.", "authority_tier": "reference", "source": "openFDA / FDA NDC Directory (public domain)", "generated": false}, {"id": "card_src_drug_chlorine_dioxide_clo2", "title": "Chlorine Dioxide(Clo2)", "shelf": "medicine", "surface": "secular", "snippet": "Chlorine Dioxide(ClO2): a HUMAN OTC DRUG, liquid given by the topical route.", "authority_tier": "reference", "source": "openFDA / FDA NDC Directory (public domain)", "generated": false}, {"id": "card_src_pron_chlorine", "title": "chlorine", "shelf": "pronunciation", "surface": "secular", "snippet": "chlorine: pronounced (ARPABET) K L AO1 R IY0 N. 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", "generated": false}, {"id": "card_src_word_chlorine_dioxide", "title": "chlorine dioxide", "shelf": "dictionary", "surface": "secular", "snippet": "chlorine dioxide: (noun) an explosive gas (ClO2) used chiefly in bleaching paper or starch or soap or flour and in water purification", "authority_tier": "reference", "source": "WordNet 3.0, Princeton University (WordNet License)", "generated": false}, {"id": "card_src_drug_alpha_ketoglutaric_acid_alpha_lipoic_acid_ascorbic_acid_barium_oxalosuccinate_black_cohosh_bryonia_alba_root_calcitonin_human_chlorine_colchicum_autumnale_bulb_nadide", "title": ".Alpha.-Ketoglutaric Acid - Alpha Lipoic Acid - Ascorbic Acid - Barium Oxalosuccinate - Black Cohosh - Bryonia Alba Root - Calcitonin Human - Chlorine - Colchicum Autumnale Bulb - ", "shelf": "medicine", "surface": "secular", "snippet": ".ALPHA.-KETOGLUTARIC ACID - ALPHA LIPOIC ACID - ASCORBIC ACID - BARIUM OXALOSUCCINATE - BLACK COHOSH - BRYONIA ALBA ROOT - CALCITONIN HUMAN - CHLORINE - COLCHICUM AUTUMNALE BULB - NADIDE -: a HUMAN OT", "authority_tier": "reference", "source": "openFDA / FDA NDC Directory (public domain)", "generated": false}, {"id": "card_water_clarify", "title": "Making cloudy water clear before you treat it", "shelf": "water", "surface": "secular", "snippet": "Disinfection (chlorine especially) works poorly on cloudy water — the particles shield germs and soak up the chlorine. So CLARIFY first: let muddy water SETTLE for an hour or more and pour off the cle", "authority_tier": "reference", "source": "CDC water safety & storage guidance (U.S. government, public domain)", "generated": false}, {"id": "card_survival_purify_water", "title": "Making water safe to drink", "shelf": "survival", "surface": "secular", "snippet": "Boiling is surest: bring clear water to a ROLLING boil for 1 minute (3 minutes above ~6,500 ft), let cool. No fire? Use unscented household bleach (5–9% sodium hypochlorite): 2 drops per quart/liter o", "authority_tier": "reference", "source": "CDC/EPA emergency water guidance (U.S. government, public domain)", "generated": false}, {"id": "card_water_filters", "title": "Filters — what each kind actually removes", "shelf": "water", "surface": "secular", "snippet": "Not all filters do the same job. SEDIMENT/cloth filters remove dirt and grit only. CERAMIC and HOLLOW-FIBER (0.1–0.2 micron) filters remove bacteria and protozoa (giardia, crypto) but usually NOT viru", "authority_tier": "reference", "source": "U.S. EPA drinking-water guidance (public domain)", "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", "generated": false}, {"id": "card_src_word_atomic_number_17", "title": "atomic number 17", "shelf": "dictionary", "surface": "secular", "snippet": "atomic number 17: (noun) a common nonmetallic element belonging to the halogens; best known as a heavy yellow irritating toxic gas; used to purify water and as a bleaching agent and disinfectant; occu", "authority_tier": "reference", "source": "WordNet 3.0, Princeton University (WordNet License)", "generated": false}]}