Across
- 4. one of the elements in group 3 through 12 of the periodic table
- 5. a small particle in the nucleus of an atom with no electrical charge
- 6. the number of protons in the nucleus of an atom
- 8. elements in the same vertical column of the periodic table, also called a family
- 11. small positively charged particles that are found in the nucleus of an atom
- 12. a tiny, negatively charged particles that moves around the outside of the nucleus of an atom
- 15. the central core of an atom, which contains protons and neutrons
- 16. two or more substances that are together in the same place, but their atoms are not chemically bonded
- 17. a one or two letter representation of an element
Down
- 1. an element that lacks most of the properties of a metal
- 2. a class of elements characterized by physical properties that include shininess, malleability, ductility, and conductivity
- 3. the sum of protons and neutrons in the nucleus of an atom
- 7. an element that has some characteristics of both metals and nonmetals
- 9. an arrangement of elements showing the repeated pattern of their properties
- 10. a neutral group of two or more atoms held together by covalent bonds
- 13. the basic particle from which all elements are made
- 14. a horizontal row of elements in the periodic table