acid
A chemical substance that usually has a sour taste and can sometimes burn or dissolve things. In science, it is a liquid with a pH level of less than seven.
Exemplos
3 de 5Lemons contain a natural acid that makes them taste very sour.
Lemons have a natural sour chemical that gives them their sharp taste.
The researcher measured the concentration of the acid in the solution.
The scientist checked how strong the sour chemical was in the liquid mix.
Don't touch that liquid; it's acid and it will hurt your skin.
Be careful with that liquid because it is a burning chemical.
Sinônimos
Família de palavras
Dica de memorização
Think of the 'A' in Acid and 'A' in Apples or lemons; many fruits have acid which makes them taste sharp.
Quiz rápido
The scientist poured the ____ into the glass tube very carefully.
Correto!
A resposta correta é: acid
Exemplos
Lemons contain a natural acid that makes them taste very sour.
everydayLemons have a natural sour chemical that gives them their sharp taste.
The researcher measured the concentration of the acid in the solution.
formalThe scientist checked how strong the sour chemical was in the liquid mix.
Don't touch that liquid; it's acid and it will hurt your skin.
informalBe careful with that liquid because it is a burning chemical.
When an acid reacts with a base, they produce water and salt.
academicMixing a sour chemical with its opposite creates water and salt.
Our company must follow safety rules when moving industrial acid.
businessThe business has to use safety laws when transporting strong chemicals.
Sinônimos
Família de palavras
Colocações comuns
Frases Comuns
acid test
A way to find out if something is really true or effective.
acid reflux
A medical condition where stomach acid goes up into the throat.
fatty acid
A type of molecule found in fats and oils.
Frequentemente confundido com
Acid is a noun (the substance), while acidic is an adjective (describing the quality).
Notas de uso
In everyday English, 'acid' is used to describe sour foods or dangerous chemicals. In science class, it specifically refers to substances with a low pH.
Erros comuns
Learners often say 'The food is acid' instead of 'The food is acidic.' Use 'acid' for the substance itself.
Dica de memorização
Think of the 'A' in Acid and 'A' in Apples or lemons; many fruits have acid which makes them taste sharp.
Origem da palavra
From the Latin word 'acidus,' meaning sour or sharp-tasting.
Padrões gramaticais
Contexto cultural
The term 'acid' is often associated with battery safety or environmental issues like acid rain in many countries.
Quiz rápido
The scientist poured the ____ into the glass tube very carefully.
Correto!
A resposta correta é: acid
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