Which statement best describes the difference between a compound and a mixture? Group of answer choices Compounds are physical combined, but mixtures are chemically combined. Compounds and mixtures are both heterogeneous. All compounds are homogenous, but all mixtures are heterogeneous. Compounds are pure substances, but mixtures are not.

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.

there is none because earth is stationary and flat.

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.