Question

unit review - matter and change
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identify the following as an element or compound.
boron (b)
compound element

Explanation:

Elements are pure substances made of only one type of atom, represented by a unique chemical symbol. Boron has the symbol (B), which is a single entry on the periodic table, meaning it consists of only boron atoms. Compounds are made of two or more different elements bonded together, which does not apply here.

Answer:

element