Chapter 12 of The Boy's Playbook of Science is here in full — 219 sentences across 44 reading sections, with audio for every sentence and word.
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Chapter XII
Chapter 12 of The Boy's Playbook of Science is here in full — 219 sentences across 44 reading sections, with audio for every sentence and word.
CHLORINE, IODINE, BROMINE, FLUORINE. _The four Halogens, or Producers of Substances like Sea Salt._ Chlorine ([Greek: _chlôros_], green). Symbol, Cl. Combining proportion, 35.5. Specific gravity, 2.44.
Chapter 12 of The Boy's Playbook of Science is here in full — 219 sentences across 44 reading sections, with audio for every sentence and word.
Reading 1/43 · 5 reading units · Lines 1–5
These definitions explain words found in the current reading and keep every example grounded in its original sentence.
Oxford-style entry order: headword, part of speech, US IPA, concise definition, contextual example, and audio.
a nonmetallic heavy volatile corrosive dark brown liquid element belonging to the halogens; found in sea water
From this reading “CHLORINE, IODINE, BROMINE, FLUORINE.”
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 only as a salt (as in sea water)
From this reading “CHLORINE, IODINE, BROMINE, FLUORINE.”
an occurrence that results in things being united
From this reading “Combining proportion, 35.5.”
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 fluorapatite
From this reading “CHLORINE, IODINE, BROMINE, FLUORINE.”
a nonmetallic element belonging to the halogens; used especially in medicine and photography and in dyes; occurs naturally only in combination in small quantities (as in sea water or rocks)
From this reading “CHLORINE, IODINE, BROMINE, FLUORINE.”
plural of “producer” — someone who manufactures something
From this reading “_The four Halogens, or Producers of Substances like Sea Salt._ Chlorine ([Greek: _chlôros_], green).”
(sometimes followed by “to”) applying to or characterized by or distinguishing something particular or special or unique
From this reading “Specific gravity, 2.44.”
plural of “substance” — the real physical matter of which a person or thing consists
From this reading “_The four Halogens, or Producers of Substances like Sea Salt._ Chlorine ([Greek: _chlôros_], green).”
English keeps certain words together, and knowing the pair is worth more than knowing each word alone. Every partnership below was counted across our whole published library, and earns its place by appearing far more often than two unrelated words of the same frequency would.
Shown as this reading writes them, with the form the library counts, what kind of pairing it is, and how often it occurs.
the density of a substance relative to the density of water
In this reading “Specific gravity, 2.44.”
Every word in these five lines is listed here, and every one of them can be played on its own.
Dictionary details are shown only when verified; these are not licensed Oxford entries.
Dictionary entry pending editorial verification. Tap Listen to hear the word.
From this reading Specific gravity, 2.44.
Dictionary entry pending editorial verification. Tap Listen to hear the word.
From this reading Combining proportion, 35.5.
a nonmetallic heavy volatile corrosive dark brown liquid element belonging to the halogens; found in sea water
From this reading CHLORINE, IODINE, BROMINE, FLUORINE.
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 only as a salt (as in sea water)
From this reading CHLORINE, IODINE, BROMINE, FLUORINE.
Dictionary entry pending editorial verification. Tap Listen to hear the word.
From this reading _The four Halogens, or Producers of Substances like Sea Salt._ Chlorine ([Greek: _chlôros_], green).
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 only as a salt (as in sea water)
From this reading Symbol, Cl.
an occurrence that results in things being united
From this reading Combining proportion, 35.5.
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 fluorapatite
From this reading CHLORINE, IODINE, BROMINE, FLUORINE.
the cardinal number that is the sum of three and one
From this reading _The four Halogens, or Producers of Substances like Sea Salt._ Chlorine ([Greek: _chlôros_], green).
(physics) the force of attraction between all masses in the universe; especially the attraction of the earth's mass for bodies near its surface
From this reading Specific gravity, 2.44.
the Hellenic branch of the Indo-European family of languages
From this reading _The four Halogens, or Producers of Substances like Sea Salt._ Chlorine ([Greek: _chlôros_], green).
green color or pigment; resembling the color of growing grass
From this reading _The four Halogens, or Producers of Substances like Sea Salt._ Chlorine ([Greek: _chlôros_], green).
Dictionary entry pending editorial verification. Tap Listen to hear the word.
From this reading _The four Halogens, or Producers of Substances like Sea Salt._ Chlorine ([Greek: _chlôros_], green).
a nonmetallic element belonging to the halogens; used especially in medicine and photography and in dyes; occurs naturally only in combination in small quantities (as in sea water or rocks)
From this reading CHLORINE, IODINE, BROMINE, FLUORINE.
prefer or wish to do something
From this reading _The four Halogens, or Producers of Substances like Sea Salt._ Chlorine ([Greek: _chlôros_], green).
belonging to, or connected with, somebody or something
From this reading _The four Halogens, or Producers of Substances like Sea Salt._ Chlorine ([Greek: _chlôros_], green).
used to join alternatives or possibilities
From this reading _The four Halogens, or Producers of Substances like Sea Salt._ Chlorine ([Greek: _chlôros_], green).
plural of “producer” — someone who manufactures something
From this reading _The four Halogens, or Producers of Substances like Sea Salt._ Chlorine ([Greek: _chlôros_], green).
the quotient obtained when the magnitude of a part is divided by the magnitude of the whole
From this reading Combining proportion, 35.5.
a compound formed by replacing hydrogen in an acid by a metal (or a radical that acts like a metal)
From this reading _The four Halogens, or Producers of Substances like Sea Salt._ Chlorine ([Greek: _chlôros_], green).
a division of an ocean or a large body of salt water partially enclosed by land
From this reading _The four Halogens, or Producers of Substances like Sea Salt._ Chlorine ([Greek: _chlôros_], green).
(sometimes followed by “to”) applying to or characterized by or distinguishing something particular or special or unique
From this reading Specific gravity, 2.44.
plural of “substance” — the real physical matter of which a person or thing consists
From this reading _The four Halogens, or Producers of Substances like Sea Salt._ Chlorine ([Greek: _chlôros_], green).
an arbitrary sign (written or printed) that has acquired a conventional significance
From this reading Symbol, Cl.
used before a noun that is already known, already mentioned, or the only one of its kind
From this reading _The four Halogens, or Producers of Substances like Sea Salt._ Chlorine ([Greek: _chlôros_], green).
Chapter 12 of The Boy's Playbook of Science by John Henry Pepper holds 219 sentences, grouped into 44 reading sections of at most 5 sentences. The text is the source edition, unabridged, and the chapter records which sentences cover which part of the work so that nothing is dropped. Every word can be tapped for its pronunciation and dictionary entry.
Chapter 12 holds 219 sentences of The Boy's Playbook of Science, unabridged, divided into 44 reading sections.
This page carries chapter 12 of The Boy's Playbook of Science by John Henry Pepper exactly as it stands in the source edition, without abridgement. It runs to 219 sentences, grouped into 44 sections of at most 5 sentences so that a reader can take the chapter in steady, finishable pieces. The chapter also stores a coverage record mapping every one of its sentences to a part of the work, which is how the edition demonstrates that no line was dropped.
Work through the 44 sections in order, replaying any sentence and tapping unfamiliar words for their entries.
Each of the 44 sections in this chapter is short enough to read once, hear once, and then re-read with the vocabulary in view. Tapping a word plays it alone and opens its dictionary entry with IPA, part of speech and meaning, so the reader is never forced to guess a pronunciation from spelling. Working section by section keeps a long chapter from becoming an undifferentiated wall of text, which is the usual reason a reader abandons a work of this period.
Yes — every sentence and every individual word in chapter 12 can be played aloud in United States English.
Audio covers the whole chapter: any sentence can be played, and any single word within it can be played on its own. The voice uses United States English. For a work of this period that matters, because spelling is an unreliable guide to pronunciation for vocabulary that has fallen out of daily use, and a learner who guesses wrong tends to keep the error. Hearing the word in its own sentence, and then alone, settles it.
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Project Gutenberg eBook #41839, unabridged. The Project Gutenberg header, footer and licence are removed.
About 350 minutes of reading across 842 sections of 5 sentences each, at an unhurried pace.
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