Periodic table
Across
- 3. a _____ is a column of elements in the periodic table
- 5. the chemical element of the atomic number 8
- 6. the total number of protons and neutrons in a nucleus
- 8. a solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivity
- 10. a colorless, odorless, highly flammable gas, the chemical element of atomic number 1
- 11. a thing that is composed of 2 or more separate elements
- 13. 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
- 14. on the periodic table ________ are placed between metals and nonmetals
- 16. 1 or 2 letters that represent an element
- 17. there are 7 _____ going horizontally across the Periodic Table
- 18. chemical ______ cannot be broken down by chemical means
Down
- 1. an element or substance that is not a metal
- 2. _____ is a body of matter with no specific shape
- 4. a table of chemical elements arranged in order of atomic number
- 6. that which occupies space and possesses rest mass
- 7. elements are arranged in a ______ of rows (or periods)
- 9. the smallest particle that has the properties of an element
- 12. Is a chemical element with the symbol of Ar
- 14. a group of atoms bonded together
- 15. A person that studies science