ESC 1000 Lecture Notes - Lecture 23: Atomic Mass, Atomic Number, Atom
Document Summary
The positively charged nucleus and the negatively charged electrons circling around it, within an atom. Approximately equivalent to the number of protons and neutrons in a atom. The number of protons in the nucleus of an atom. Same number of protons/different number of neutrons/have different masses. One of the ninety-three occurring chemical elements in the environment. Anion: gained (more negatively charged) cation: lost (less negatively charged) An item that is composed of two or more separate elements (a mixture) A solid material whose constituents are arranged in a highly orderly structure forming a crystal lattice that extends in all directions. Is a unique arrangement of atoms in a crystal. Both are crystalline forms of the element carbon, different crystal structure, and have a very simple chemical composition; yet diamond is the hardest material known to man. Mineral (know all of it: naturall(cid:455) o(cid:272)(cid:272)urri(cid:374)g, solid (cid:894)ele(cid:373)e(cid:374)t or (cid:272)o(cid:373)pou(cid:374)d(cid:895, for(cid:373)ed (cid:271)(cid:455) (cid:374)atural/geologi(cid:272) pro(cid:272)esses (cid:894)(cid:374)o(cid:374)-biogenic, i(cid:374)orga(cid:374)i(cid:272, defi(cid:374)ite (cid:272)he(cid:373)i(cid:272)al (cid:272)o(cid:373)positio(cid:374) (cid:894)e(cid:454).
