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Atoms and the chemical bonds that connect them cannot be observed with your eyes, so it is necessary to use a
a. microscope
b. theory
c. model
d. both (b) and (c)

Relax

Respuesta :

Answer: d. both (b) and (c)

Explanation:

Atoms are too small to be seen on microscopes, so we model them based on theories.

It is d
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