Across
- 1. Neutral particle in the nucleus of an atom.
- 4. Measure of how easily an element forms compounds.
- 6. Two or more atoms bonded together, forming the smallest unit of a compound.
- 8. Elements that are poor conductors and often brittle. Right side of table.
- 10. The smallest unit of an element that retains its properties.
- 11. MetalsVery reactive metals in Group 1 of the periodic table.
- 13. These oxides are usually acidic and can lower the pH of water. (7,5)
- 14. Horizontal row in the periodic table.
- 17. The lightest and most abundant element in the universe.
- 18. A substance made of two or more elements chemically bonded.
- 19. Positively charged particle in the nucleus of an atom.
Down
- 2. Negatively charged particle in an atom.
- 3. The pH of a solution formed when sodium oxide dissolves in water.
- 5. Element with properties of both metals and nonmetals.
- 6. Elements that are good conductors of heat and electricity. Left side of table.
- 7. These oxides are often basic and react with acids to form salt and water. (5,5)
- 9. The pH of a solution formed when carbon dioxide dissolves in water.
- 12. Predictable pattern, like increasing reactivity down a group.
- 15. A pure substance made of only one type of atom.
- 16. Vertical column in the periodic table, also called a family.