Periodic Table Vocabulary

4. An element that is generally shiny, conducts electricity and heat well, and is malleable and ductile.
7. An element with properties intermediate between metals and nonmetals.
9. A neutral subatomic particle found in the nucleus of an atom.
10. The electrons in the outermost shell of an atom, which participate in chemical bonding.
11. A vertical column on the periodic table, representing elements with similar chemical properties.
14. The tendency of an element to react with other elements.
16. A horizontal row on the periodic table, representing elements with the same number of electron shells.
17. An organized arrangement of the chemical elements in order of their atomic numbers, showing recurring patterns in their properties.
18. An atom or molecule that has a net electric charge due to the gain or loss of electrons.

1. A chemical bond formed by the sharing of electrons between atoms.
2. An element that is generally not shiny, does not conduct electricity or heat well, and is often a gas at room temperature.
3. The number of protons in the nucleus of an atom of an element.
5. A substance composed of only one type of atom, with a unique atomic number.
6. A negatively charged subatomic particle that orbits the nucleus of an atom.
8. The smallest unit of an element that can exist.
12. A positively charged subatomic particle found in the nucleus of an atom.
13. An atom of an element that has a different number of neutrons than other atoms of the same element, resulting in a different mass.
15. A chemical bond formed by the electrostatic attraction between oppositely charged ions.