Across
- 3. Any of the elements fluorine, chlorine, bromine, iodine, and astatine, occupying group 7 of the periodic table.
- 4. Has no charge.
- 9. Attracts protons and neutrons because they have different charges.
- 13. an electrically neutral group of two or more atoms
- 14. Copies of the same element with different number of neutrons
- 15. Material that is usually hard, shiny, and conducts heat and electricity.
- 16. iron, manganese, chromium, and copper.
- 18. Any of the gaseous elements helium, neon, argon, krypton, xenon, and radon, occupying Group 0 (8) of the periodic table.
- 20. Represents an element with first letter capitalized and second letter lowercase
Down
- 1. a table of the chemical elements arranged in order of atomic number, usually in rows,
- 2. a set of elements occupying an entire horizontal row in the periodic table
- 5. Has negative charge.
- 6. Number of _______ determine what element it is.
- 7. holds nucleus together
- 8. a group of chemical elements in the periodic table with very similar properties: they are all shiny, soft, silvery, highly reactive metals.
- 10. An element that shares characteristics of both metals and nonmetals.
- 11. Always acting between objects and depends on distance and mass.
- 12. 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.
- 17. Element that lacks metallic properties. Usually not conductive.
- 19. a combination of atoms having a recognizable identity in a number of compounds.