chemical weathering: meaning, definition, pronunciation and examples
C1/C2Technical/Specialist (primary); Academic (secondary)
Quick answer
What does “chemical weathering” mean?
The process by which rocks and minerals are broken down and altered through chemical reactions, often involving water, acids, or gases.
Audio
Pronunciation
Definition
Meaning and Definition
The process by which rocks and minerals are broken down and altered through chemical reactions, often involving water, acids, or gases.
A sub-process of weathering where the chemical composition of rock is changed, weakening its structure and making it more susceptible to physical erosion. This includes processes like hydrolysis, oxidation, carbonation, and solution. It contrasts with physical weathering, which involves mechanical breakdown without chemical change.
Dialectal Variation
British vs American Usage
Differences
No lexical differences. Spelling conventions follow the national standard for 'chemical' (no difference) and 'weathering' (no difference). The term is identically used and defined in both academic traditions.
Connotations
Identical connotations. Purely scientific, descriptive, and non-evaluative.
Frequency
Equally frequent in relevant academic and technical contexts in both the UK and US. Virtually unknown in everyday conversation.
Grammar
How to Use “chemical weathering” in a Sentence
Chemical weathering of [granite] is accelerated by [acid rain].[Rainwater] causes chemical weathering through [hydrolysis].[The limestone] underwent chemical weathering.Vocabulary
Collocations
Examples
Examples of “chemical weathering” in a Sentence
verb
British English
- The granite was chemically weathered over millennia.
- Acidic groundwater weathers the limestone chemically.
American English
- The bedrock chemically weathered into clay minerals.
- Rainwater chemically weathers the exposed shale.
adverb
British English
- [This term is not typically used as an adverb. The adjective 'chemically' is used with 'weathered'.]
American English
- [This term is not typically used as an adverb. The adjective 'chemically' is used with 'weathered'.]
adjective
British English
- The chemical weathering process is dominant in humid climates.
- They studied the chemical weathering rates.
American English
- Chemical weathering effects were evident on the tombstone.
- The research focused on chemical weathering products.
Usage
Meaning in Context
Business
Rare. Might appear in reports for mining, quarrying, or construction regarding material durability.
Academic
Primary context. Used in geology, geography, environmental science, and engineering textbooks and papers.
Everyday
Very rare. Only in detailed explanations about landscapes, cave formation, or rust.
Technical
High-frequency core term. Used in geological surveys, civil engineering (assessing rock stability), and conservation science.
Vocabulary
Synonyms of “chemical weathering”
Strong
Neutral
Weak
Vocabulary
Antonyms of “chemical weathering”
Watch out
Common Mistakes When Using “chemical weathering”
- Misspelling as 'chemcial weathering'.
- Using 'chemical weathering' to refer to the *result* (e.g., soil) rather than the *process*.
- Confusing it with pollution or contamination, which are separate anthropogenic processes.
FAQ
Frequently Asked Questions
Water is the most important agent, as it facilitates nearly all chemical weathering reactions, including hydrolysis, carbonation, and solution.
Chemical weathering changes the mineral composition of the rock (it becomes a different substance), while physical weathering breaks the rock into smaller pieces without changing its chemical makeup.
In warm, humid climates because high temperatures and abundant moisture accelerate chemical reactions.
The rusting of an iron nail (oxidation) or the fading and crumbling of an old marble statue due to acid rain (carbonation and solution).
The process by which rocks and minerals are broken down and altered through chemical reactions, often involving water, acids, or gases.
Chemical weathering is usually technical/specialist (primary); academic (secondary) in register.
Chemical weathering: in British English it is pronounced /ˈkemɪkəl ˈweðərɪŋ/, and in American English it is pronounced /ˈkemɪkəl ˈweðərɪŋ/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “[No idioms for this technical term]”
Learning
Memory Aids
Mnemonic
Think of a rusty bicycle (OXIDATION) left in the rain. The water and air chemically change the metal, weakening it – that's 'chemical weathering' for rocks.
Conceptual Metaphor
ROCKS ARE A SUBSTANCE UNDER CHEMICAL ATTACK; WEATHERING IS A CONSUMING PROCESS (e.g., 'Acids eat away at the rock').
Practice
Quiz
Which of the following is NOT a type of chemical weathering?