info@bestmytest.com Looking for IELTS info?

impurity

Find out how TOEFL Tutor can help you improve your score with a 7 day free trial

definition: 
A constituent which impairs the purity of something
sentence: 
The impurities dissolve in lead and evaporate leaving behind silver and gold. Aluminium and lead are impurities frequently found in tap water.
difficulty: 
medium
toefl frequency: 
2