Explain how the uncertainty associated with a measurement is conveyed through the proper use of significant figures

Every measurement has a degree of uncertainty associated with it. The uncertainty derives from the measuring device and from the skill of the person doing the measuring. The number of significant figures is determined starting with the leftmost non-zero digit. The leftmost non-zero digit is sometimes called the most significant digit or the most significant figure

it should have an internal chamber and two thermometers sticking out of the top. the internal chamber will also be closed off from the outside.

colorless gas, exhibiting a blue glow when placed in an electric field

b) solid

its a type of rock