Mary and Jim used a streak plate to test pieces of the rock. they compared their results to a streak of limonite what do you notice? What can you conclude from the text

it is called acid bonding

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.