Across
- 4. an atom or group of atoms that has an electric charge
- 7. a covalent bond in which electrons are shared equally
- 8. bond that forms as a result of the attraction between positive and negative ions
- 11. when an atom gains an electron, it becomes a ________ ion
- 14. an orderly, three-dimensional arrangement of ions
- 15. a chemical ___________ is a combination of symbols that shows the ratio of elements in a compound
- 17. a neutral group of atoms joined by covalent bonds
- 19. this tells you the ratio of elements in the compound
- 20. magnesium has this many electron levels
- 23. iodine would have this many dots around it for its electron dot diagram
- 24. type of bond that usually forms when a metal combines with a nonmetal
- 25. there are this many magnesium ions to chloride ions in magnesium chloride
- 26. this element has five total electrons
- 28. means that metals can be bent easily and pulled into thin strands or wires
Down
- 1. most molecular compounds do not _______ electric current
- 2. this element has two electron levels and five valence electrons
- 3. those electrons that have the highest energy level
- 5. ions that are made of more than one atom
- 6. a covalent bond in which electrons are shared unequally
- 9. able to be rolled into thin sheets
- 10. bond that forms as a result of the attraction between a positive metal ion and the many electrons surrounding it
- 12. an oxygen molecule has one ________ bond
- 13. a nitrogen molecule has one ________ bond
- 14. this element has four electron levels and two valence electrons
- 16. in naming ionic compounds, the name of this ion comes first
- 18. shiny and reflective
- 21. ionic compounds have ________ melting points
- 22. this molecule is an example of a polar covalent bond
- 24. an ionic ____________ consists of positive and negative ions
- 27. a mixture made of two or more elements, at least one of which is a metal