chlorine - Master This Word
Master this word with our 5-step learning method – Learn English in English
chlorine Word Meanings
- A chemical element used for disinfecting water.
- A greenish-yellow gas with a pungent odor.
- A compound used in making bleach.
chlorine Example Sentences
Example sentences are the start of understanding. Don't rush to memorize. First feel how the word works in a sentence.
chlorine Phonetic & Pronunciation
UK
/klɔːˈriːn/
US
/klɔːˈriːn/
chlorine Word Etymology
Chlorine comes from Greek 'chloros' meaning 'green', and was coined in the early 19th century. Imagine a vibrant green liquid that cleans, a hint of bright green color symbolizing purity and freshness.
Note 1: These definitions and etymologies are not standard dictionary definitions, but extended explanations provided to help with memorization and understanding of the actual application of words. Through this background information, we strive to make words more vivid and easier to understand, and help you remember their meanings in real life.
Note 2: LexiTalk designs the learning flow around the linguistics principle of “Comprehensible Input.” When learners encounter material that is slightly above their level but still understandable from context, the brain naturally absorbs the language. That’s why we keep every word inside authentic contexts, using examples and associations to help you understand it and use it flexibly.
Read the FAQ explanation of Comprehensible InputReal Context
Chlorine is a chemical element with symbol Cl and atomic number 17. It is a pale greenish-yellow gas at room temperature and highly reactive. In everyday life, chlorine is widely used to disinfect water in swimming pools and municipal systems, helping to kill bacteria and keep water safe. It also features in many household products as a bleaching agent, such as household bleach and some cleaners. The term comes from the Greek chloros meaning green. Learners often confuse chlorine with chlorides or with other halogens, and may misuse it in contexts about smell, color, or gas safety.
Usage Reminders
- • Chlorine can refer to the element or to the disinfectant used in water treatment.
- • Do not treat chlorine and chloride as the same thing.
- • In pool talk, use terms like chlorine levels and free chlorine.
- • Chlorine gas is hazardous; avoid exposure and mixing with acids.
- • Bleach is usually a sodium hypochlorite solution, not chlorine gas itself.
Common Misconceptions
- Chlorine is only a gas at room temperature, so it’s not used in pools or water treatment.
- Chlorine and chloride are the same thing; they are interchangeable terms.
- Bleach equals chlorine gas; household bleach is pure chlorine gas.
- Chlorine is always dangerous or poisonous in everyday use.
- Chlorine color always looks the same; color is not a reliable clue for the element.
Thinking Differences
English learners often distinguish chemical elements and everyday chemicals clearly; avoid conflating 'chlorine' (the element or disinfectant) with 'bleach' or 'chloride' ions.
Learning Tips
- Learn chlorine as both element and disinfectant; remember its contrast with chloride ions.
- Keep pool contexts separate: levels, free chlorine, and stabilized forms.
- Know that bleach is not pure chlorine gas; it's usually hypochlorite solution.
- Practice safety notes: chlorine gas is hazardous and heavy exposure is dangerous.
- Differentiate color descriptions: chlorine gas is greenish-yellow, not always visible.
- Use mnemonic: Chlorine has symbol Cl and cleans with a C of disinfection.
5-Step Learning Method - Learn English in English
Step 1: Meaning
What is the meaning of the word 'chlorine'?
A.A type of metal
B.A type of fabric
C.A type of vegetable
D.A type of gas
Step 2: Usage
Which of the following sentences uses 'chlorine' correctly?
A.The swimming pool was treated with chlorine to keep it clean.
B.I bought some chlorine apples at the store.
C.She wore a chlorine dress to the party.
D.He used chlorine to fix his computer.
Step 3: Similar Words
What is a synonym for 'chlorine'?
A.Oxygen
B.Nitrogen
C.Bromine
D.Fluorine
Step 4: Opposite Words
What is the opposite of 'chlorine'?
A.Hydrogen
B.Sodium
C.Carbon
D.Iron
Step 5: Mastery
In what real-life context would you encounter 'chlorine'?
A.Cooking a meal
B.Working in a garden
C.Swimming in a pool
D.Reading a book
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