physical property of some minerals that cause them to break along smooth, flat surfaces

Which of these is something that rocks and minerals have in common? Both are formed naturally, have a specific chemical composition, contain organic material, or have a crystalline structure.

the type of luster that looks like polished metal

a naturally occurring solid material that is made up of one or more minerals and may contain organic matter

the way a mineral reflects light

a naturally occurring inorganic solid with a distinct chemical composition and crystalline structure

the type of luster that looks like glass

the color of a mineral in its powdered form, as shown when it is rubbed on a porcelain plate or unglazed tile

As the numbers on the Mohs Hardness Scale decrease, the hardness of the mineral _______________.

the type of luster that is not bright or shiny

As the numbers on the Mohs Hardness Scale increase, the hardness of the mineral _______________.

the type of luster that is a solid color and shimmers faintly