Periodic Table Crossword
Across
- 2. elements that are usually dull in appearance, poor conductors of heat and electricity, gases at room temperature
- 5. metallic elements in group 2 of the periodic table which are harder than the alkali metals and are also less reactive
- 6. A negatively charged ion
- 7. A horizontal row of elements in the periodic table
- 10. A regular periodic variation of properties of elements with atomic number and position in the Periodic Table.
- 11. An elment that is solid at room temperature, a good conductor of heat and electricity, and generallyis shiny, most metals are ductile and mallerable
- 13. Elements of group 7A. Have a charge of -1. Fluorine, Chlorine, Bromine, Iodine. Form compounds with sodium in the form NaX
- 15. The average mass of all the isotopes of an element.
- 18. An atom or group of atoms that has gained or lost one or more electrons, thus acquiring a charge.
- 19. Elements of group 1A. Have a charge of +1. Lithium, Sodium, Potassium, Rubidium, Cesium. React with water to form hydrogen gas and a metal hydroxide (MOH) + H2. Also from compounds with the halogens in the form MX. Ex. NaCl.
Down
- 1. 14 elements with atomic number 58-71 (shiny metals similar in reactivity to to alkaline earth metals)
- 3. A positively charged ion
- 4. Groups 3-12, 1-2 electrons in the outer energy level, less reactive than alkali-earth metals, shiny, good conductor of thermal energy and electrical current, high density
- 7. the law that states that the repeating chemical and physical properties of elements change periodically with the atomic numbers of the elements
- 8. A Russian chemist. He is credited as being the primary creator of the first version of the periodic table of elements.
- 9. Arranged elements in order of increasing ATOMIC NUMBER
- 12. A column on the periodic table
- 14. Number of protons in the nucleus of an atom
- 16. A series of elements that follow actinium in Period 7 of the periodic table and that are typically placed separately at the bottom of the periodic table
- 17. Elements in group 8A of the periodic table. Have no charge and are gases under normal conditions