molecule
Pronunciation
Noun
B1 Intermediate
Quick answer
The smallest unit of a substance that still has all the chemical properties of that substance, formed when two or more atoms join together.
Test yourself
Which word fits the gap? "A water _____ is made of two hydrogen atoms and one oxygen atom."
Answer: molecule
In your own words, what does "molecule" mean?
The smallest unit of a substance that still has all the chemical properties of that substance, formed when two or more atoms join together.
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