Across
- 5. the process of adding or removing electrons from an atom or molecule, which gives the atom or molecule a net charge
- 7. an element in the s-block or p-block of the periodic table
- 10. one of the elements of group 17 (Fluorine, Chlorine, Bromine, Iodine, and Astatine); combines with most metals to form salts
- 13. an arrangement of the elements in order of their atomic numbers such that elements with similar properties are in the same column, or group
- 14. a measure of the ability of an atom in a chemical compound to attract electrons
- 15. any of the series of heavy radioactive elements that extends from Thorium (atomic number 90) through Lawrencium (atomic number 103) on the periodic table
- 16. an atom, radical, or molecule that has gained or lost one or more electrons and has a negative or positive charge
- 17. the energy needed to remove an electron from a negative ion to form a neutral atom or molecule
- 18. an ion that has a negative charge
Down
- 1. one of the elements of group one on the periodic table (Lithium, Sodium, Potassium, Rubidium, Cesium, and Francium)
- 2. an ion that has a positive charge
- 3. the energy required to remove and electron from an atom or ion
- 4. a member of the rare earth series of elements, whose atomic numbers range from 58 (Cerium) to 71 (Luteium)
- 6. an electron that is found in the outermost shell of an atom and that determines the atoms chemical properties
- 8. one-half of the distance between the center of identical atoms that are not bonded together
- 9. one of the metals that can use the inner shell before using the outer shell to bond
- 11. one of the elements of group two on the periodic table (Beryllium, Magnesium, Calcium, Strontium, Barium, and Radium)
- 12. the law that states that the repeating chemical and physical properties of elements change periodically with the atomic numbers of the elements