If a metal disc is heated.What properties of it will change? Volume,Mass,Density Radius,Length,Width Etc.?

I think you know what happens to its size when you heat it. The tricky question is whether it weighs more or less when you do that. (Hint: it's still the same disk, just bigger.)

Volume: depends on whether its dimensions change.
Mass: depends on whether its weight changes when you heat it.
Density: depends on whether the volume or mass changes.
Radius: depends on the width of the circle.
Length (of the cylinder, i.e. height): depends on what happens when you heat it.
Width: depends on what happens when you heat it.

Everything on your list except Mass and Density will increase.
Density will decrease.
Mass will remain unchanged.