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Sagot :
Answer:
copper is the only material composed of a single pure substance
Explanation:
plss mark brainliest
Answer:
1st opt.
(copper is the only material consisting of a single pure substance)
Explanation:
an element is made up of only one type of atom, and copper (Cu) as you can see is a single pure atom whereas salt (NaCl) and vinegar (C2H4O2) are both made of different elements.
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