A student is given a sample of unknown substance. He is asked to determine if it is classified as a metal, a metalloid, or a non-metal. He discovered that the unknown element conducted some heat and electricity, had a shiny surface, and broke easily. This element is most likely a

Metal

Non-metal

Metalloid

Cannot be determined

Diffraction is when light is bent around obstructions. which of the these observation about clouds would indicate diffraction? a) after rain storms, you can sometimes see rainbows. b) clouds are white or gray and cannot be seen through. c) on a cloudy day, the temperature tends to be cooler than a sunny day. d) the edges of dark clouds appear lighter. this