Chapter 3 - Atoms, Elements, Minerals, and Rocks Flashcards
Atom
Smallest individual particle retaining properties of an element.
Element
Fundamental substances into which matter can be broken down chemically.
Rock
Naturally formed,coherent mass of one or more minerals, sometimes including organic debris.
Atomic Number
Number of protons in nucleus
Mass Number
Total number of protons plus neutrons
Isotopes
Atoms with the same atomic number but different mass numbers
Electrons
Negative Charge - Contribute very little mass - move around nucleus in complex 3-D patterns called orbitals
Energy Level Shells
Groupings of orbitals
Ion
Atom with excess positive or negative charge caused by electron transfer
Cation
Atom with excess positive charge caused by electron transfer
Anion
Atom with excess negative charge caused by electron transfer
Compounds
Atoms of two or more elements combined in a specific ratio - molecule = smallest unit
Mineral Characteristics
1) Naturally formed 2) inorganic 3) solid 4) specific chemical composition 5) characteristic crystal structure
Mineraloid
similar to a mineral except it lacks specific composition and/or characteristic crystal structure
Mineral
Naturally formed inorganic solid that has a specific chemical composition and a distinct crystal structure and composed of elements.
Nucleus
Made of Protons and Neutrons. It has very little volume but nearly all mass of the atom.
Bonding
Force that holds atoms together in a compound
Ionic Bonding
Electrostatic attraction between positive and negative charged particles