Useful Chemistry Words

2. each of more than one hundred substances that cannot be chemically interconverted or broken down into simpler substances and are primary constituents of matter.
3. (of a substance) consisting of uncombined atoms rather than molecules.
4. a subatomic particle of about the same mass as a proton but without an electric charge, present in all atomic nuclei except those of ordinary hydrogen.
6. the way in which a natural phenomenon or a machine works or functions.
8. an attribute, quality, or characteristic of something.
9. the basic unit of a chemical element.
11. the idea that every substance has at least one property that makes it unique and able to be differentiated from other substances
12. a particular kind of matter with uniform properties.
16. a feature or quality belonging typically to a person, place, or thing and serving to identify it.
17. a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.
19. the nature of something's ingredients or constituents; the way in which a whole or mixture is made up.
20. the central and most important part of an object, movement, or group, forming the basis for its activity and growth.

1. a central or primary rule or principle on which something is based.
5. remaining the same in all cases and at all times; unchanging in form or character.
7. made up or consisting of two or more existing parts or elements.
10. a substance made by mixing other substances together.
13. relating to the nucleus of an atom.
14. a minute portion of matter.
15. a stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron, but of opposite sign.
18. a stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity in solids.