22 points!
in this unit we have talked about the differences between chemical and physical changes, take a look at the following images below and decide which one is representing a chemical change, and explain how you know it is a chemical change in 2-3 sentences.

the mantle

explanation:

earth is divided into three layers: the crust or the outermost layer on which we live; the underlying, middle layer - the mantle - and the core (the innermost layer of earth).

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.

you didnt put any of the following

it forms an anion that has a larger radius. anions have a negative charge and are larger than the original atom.