Periodic Table Vocabulary

3. The 1 or 2-letter abbreviation for an element (like H for hydrogen).
8. The area around the nucleus where electrons are likely to be found.
11. A tiny particle with a negative charge that moves around the nucleus of an atom.
13. Elements with properties of both metals and nonmetals.
14. An atom that has gained or lost electrons, so it has a charge.
16. A measure of how strongly an atom pulls on electrons in a bond.
19. A bond where atoms share electrons.
20. Atoms of the same element with the same number of protons but different numbers of neutrons.
21. A mix of two or more metals (or metal with another element).
22. Elements that are not shiny, don’t conduct well, and can break easily.
24. Columns on the periodic table; elements in a group have similar properties.
25. The tiny particles that make up an atom: protons, neutrons, and electrons.
26. A negatively charged ion (gained electrons).
30. The number of protons in an atom.
31. The smallest part of an element that still has the properties of that element.
33. The outermost layer of electrons in an atom.
34. An electron in the outermost shell of an atom; important in forming bonds.
35. Rows on the periodic table; show the number of electron shells.

1. A tiny particle in the nucleus of an atom that has no charge (neutral).
2. Another name for electron dot structure.
4. A bond where electrons are transferred from one atom to another, forming charged ions.
5. A simple way to show valence electrons using dots around an element’s symbol.
6. A substance made of only one kind of atom.
7. Two or more atoms bonded together.
9. Elements that are shiny, conduct heat and electricity, and can be shaped easily.
10. A drawing of an atom that shows electrons in circular orbits around the nucleus.
12. A positively charged ion (lost electrons).
15. Electrons in an atom’s outer shell that don’t form bonds.
17. The average mass of an atom of an element (includes protons and neutrons).
18. A compound made from positive and negative ions held together by ionic bonds.
23. The center of an atom, made up of protons and neutrons.
27. The overall charge of an atom or molecule, based on protons and electrons.
28. A tiny particle in the nucleus of an atom that has a positive charge.
29. A bond where electrons move freely between metal atoms.
32. A molecule with a slightly positive end and slightly negative end because electrons are unevenly shared.