Order these particles from smallest to largest
neutons, electrons, atom, nucleus, moleclue

ill do it for 100, also this isnt 80 its 40

the first american roller coaster was the mauch chunk switchback railway, built in the mountains of pennsylvania in the mid-1800s. the track, originally built to send coal to a railway, was reconfigured as a "scenic tour."

float.

archimedes' principle

denser than water sinks in water.

denser than mercury would sink in it