Yes, wax will lower the drag coefficient of the snowboard.
No, not a good idea
Possibly, depending on how good the quality of your wax is.
Gasoline, or Paint Thinner
It helps you to go faster.
use the pad it comes with
You want to scrape of almost all the wax leaving a thin coat.
Candle wax isn't the same as board wax. Candle wax can make your board stick to the snow, so just spend the extra couple bucks and buy snowboarding wax.
Some common snowboard accessories are goggles, snowboard wax, protective clothing such as suits and gloves, hats, instructional DVDs and helmets, they can be found in many stores.
take off the wax and rewax it
A scraper is used to 'scrape' the wax off of a snowboard. After the wax has been applied to the board and has soaked into the board for a few minutes, the excess wax needs to be removed or it will slow you down. The scraper can come in many sizes, but usually is a rectangle shape. IT can also be plastic or metal.
Material sciences plays a huge part in snowboard design. if we can engineer a lighter, stronger, more flexible material. We can begin to introduce it into snowboard designs, consequently making the boards lighter and an all around better ride. Also, Physics. Just think about it.