periodic table

5. a supposition or a system of ideas intended to explain something, especially one based on general principles independent of the thing to be explained.
8. state or power of being reactive or the degree to which a thing is reactive.noble gasses a substance or matter in a state in which it will expand freely to fill the whole of a container, having no fixed shape (unlike a solid) and no fixed volume (unlike a liquid).
9. mark or character used as a conventional representation of an object, function, or process, e.g. the letter or letters standing for a chemical element or a character in musical notation.
12. 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.
13. a length or portion of time.
16. an element or substance that is not a metal.
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.
19. able to be deformed without losing toughness; pliable, not brittle.
21. conductivity he degree to which a specified material conducts electricity, calculated as the ratio of the current density in the material to the electric field that causes the flow of current.
22. mass the mass of an atom of a chemical element expressed in atomic mass units.
23. a metal) able to be drawn out into a thin wire.

1. chemical composition of the atmosphere"
2. relating to chemistry, or the interactions of substances as studied in chemistry.
3. (of a metal or other material) able to be hammered or pressed permanently out of shape without breaking or cracking.
4. number the number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table.
6. is approximately equivalent to the number of protons and neutrons in the atom
7. a gentle sheen or soft glow, especially that of a partly reflective surface.
10. the process of corroding metal, stone, or other materials.
11. the strength and vitality required for sustained physical or mental activity.
14. table a table of the chemical elements arranged in order of atomic number, usually in rows, so that elements with similar atomic structure (and hence similar chemical properties) appear in vertical columns.
15. bodies fall into four distinct groups"
17. an element (e.g. arsenic, antimony, or tin) whose properties are intermediate between those of metals and solid nonmetals or semiconductors.
20. a number of people or things that are located close together or are considered or classed together.
22. to be deformed without losing toughness; pliable, not brittle.