ion exchange
Pronunciation
Noun
B2 Upper-intermediate
Quick answer
A process in which ions in a solution are swapped for different ions held on a solid material, often used to soften or purify water.
Test yourself
Which word fits the gap? "Water softeners use _____ to replace calcium ions with sodium ions."
Answer: ion exchange
In your own words, what does "ion exchange" mean?
A process in which ions in a solution are swapped for different ions held on a solid material, often used to soften or purify water.
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