NO.
There are several fun experiments to help you understand this... Do a search on... "friction experiments for kids."
yea becasue everything has air resistance including iceskatting
Even on 'frictional' ice it is possible to crawl, slide, walk on the ice.
yes
it is frictionless because the water had coldism and it is liquid
Take off some clothing to walk on and avoid slipping.
The spikes dig into ice and allow the climber to involve his feet on the slippery ice. Hard ice may require more force to 'dig' into, but spikes help prevent snow buildup, and provide stability and traction on an otherwise frictionless surface.
No.
Ice has a much smoother surface than the surface of the ground, therefore there is less friction acting on the hockey puck compared to a ball rolling on the ground. Ice is nearly a frictionless surface.
No there is always a resistive force such as air resistance. The closest frictionless train is the japanese magnetic train which has no friction on the track.
slickness, smoothness, frictionless
yes
yes it is
All physical substances so far known have a coefficient of friction. In the cases of some substances (wet ice or teflon, for example) this may be quite low, but there are no truly frictionless surfaces.