1.
smallest part of matter
2.
a naturally occurring inorganic element or compound
3.
a piece of a homogeneous solid substance having a natural geometrically regular form with symmetrically arranged plane faces
4.
the central and most important part of an object, movement, or group, forming the basis for its activity and growth
5.
positive electric charge equal in magnitude to that of an electron, but of opposite sign
6.
a stable subatomic particle with a charge of negative electricity
7.
a subatomic particle of about the same mass as a proton but without an electric charge
8.
a person who studies the formation, occurrence, properties, composition, and classification of minerals
9.
the process of turning from liquid into vapor
10.
the quality or condition of being hard
11.
a gentle sheen or soft glow, especially that of a partly reflective surface
12.
mineral any member of a family of minerals that contain the carbonate ion
13.
elating to or denoting compounds which are not organic
14.
physical substance in general, as distinct from mind and spirit
15.
a thing that is composed of two or more separate element
