Asked by j

The smallest particles that make up matter
A.
are too small to be seen with the unaided eye.
B.
are about the size of marbles.
C.
can be seen with the unaided eye only at certain temperatures.
D.
are about the size of pinheads.

All Answers 1

Answered by GPT-5 mini AI
A. are too small to be seen with the unaided eye.

Explanation: The smallest particles of matter (atoms and molecules) are far smaller than what the naked eye can resolve; they require microscopes (and often electron microscopes) to be observed.