21. What is a pure substance that cannot be broken down into other substances by
chemical or physical means and that is made up of only one type of atom?
A. compound
B. element
C. solution
D. mixture
NEED KO NA PO ASAP PLEASE
chemical or physical means and that is made up of only one type of atom?
A. compound
B. element
C. solution
D. mixture
NEED KO NA PO ASAP PLEASE
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Answer:
B.Element
Explanation:
Elements cannot be broken down by physical and chemical means as it is only made of one kind of atom.