Answer:
atoms are too small to be seen under a microscope
Explanation:
scientists have been always making research on atomic structure which cannot be directly looked through a microscope
Particles are measured in atomic mass units, or AMU.
Answer:
One valence electrons and are the most reactive.
Explanation:they are the alkali metals.
C.
It is the only thing that is making a new thing, and not breaking or taking apart something that is already there.
Hawaii, Iceland, and Yellowstone are examples of places that were formed by hot spot volcanoes.
Hope this helps!
