Science

2. the basic unit of a chemical element
4. whose properties are intermediate between those of metals and solid nonmetals or semiconductors.
6. chemical substance composed of many identical molecules composed of atoms from more than one element held together by chemical bonds.
8. a stable subatomic particle
11. Arrangement of the elements
15. the total number of protons and nuetrons in a nucleus
18. is a negatively charged particle
19. charged atom or molecule
20. the central and most important part of an object
22. bond that involves the sharing of electron pairs between atoms
23. chemical bonding that involves the electrostatic attraction between oppositely charged ions
26. a set of chemical symbols showing the elements present in a compound and their relative proportions, and in some cases the structure of the compound
27. a distinct period or stage in a series of events or a process of change or development.
29. the distribution of electrons of an atom or molecule in atomic or molecular orbitals.
30. an atom or molecule or group that has lost or gained one or more electrons. anion - a negatively charged ion
34. a subatomic particle
35. any of the interactions that account for the association of atoms into molecules, ions, crystals, and other stable species that make up the familiar substances of the everyday world.

1. a substance composed of exactly two different elements,
3. a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction
5. written or printed below the line.
7. table of the elements, in chemistry, the organized array of all the chemical elements in order of increasing atomic number
9. two or more forms of the same element
10. composed of ions of two different elements
12. the system of electrons surrounding the nucleus
13. is a column of elements in the periodic table of the chemical elements
14. They range from gases such as fluorine and oxygen through nonmetals
16. an element or substance that is not a metal.
17. set of chemical elements in the same vertical column of the periodic table
21. a subatomic particle
24. the number of protons in the nucleus
25. a positivley charged ion
28. solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivity
31. a general direction in which something is developing or changing
32. an item or molecule with a net charge
33. a negatively charged ion