Across
- 3. a vertical column of elements in the periodic table; elements in a group share chemical properties
- 5. When one or more valence electrons are given from one atom to another atom.
- 7. When two ore more atoms combine. This can be 2 of the same atoms or two different atoms (elements).
- 8. a combination of two or more substances that are not chemically combined
- 11. a substance, body, or device that readily conducts heat, electricity, sound, etc.
- 12. the number of protons in the nucleus of an atom; the atomic number is the same for all atoms of an element
- 16. capable of being extended or shaped by hammering or by pressure from rollers
- 17. Two or more elements that have combined. Most elements are found this way
- 19. Regions of space that consecutively surround the nucleus of an atom.
- 23. ^The electrons in the outermost shell (main energy level) of an atom; these are the electrons involved in forming bonds.
- 25. easily combines with other elements to make new compounds
- 27. easily damaged or destroyed; fragile
- 28. the ratio of the mass of a substance to the volume of the substance
- 29. a subatomic particle that has no charge and is found in the nucleus of an atom
- 31. the physical forms of matter, which include solid, liquid, and gas
- 32. point the temperature at which a liquid becomes a gas
- 33. the state or quality of shining by reflecting light
- 34. an element that is dull and that conducts heat and electricity poorly
- 35. Symbols that show the elements in a compound and the ratio of atoms
Down
- 1. Number of protons and neutrons
- 2. point the temperature at which a solid becomes a liquid
- 4. a subatomic particle that has a negative charge
- 6. does not combine with other elements to make new compounds
- 9. The electrons found on the outer shell of an atom. These electrons are used to form bonds with other atoms.
- 10. A chemical bond that involves sharing a pair of electrons between atoms in a molecule
- 13. an element that is shiny and that conducts heat and electricity well
- 14. the ability of a substance to be pulled into a wire
- 15. one of the elements of Group 17 of the periodic table; halogens combine with most metals to form salts
- 18. elements that have properties of both metals and nonmetals
- 20. an atom's central region, which is made up of protons and neutrons
- 21. a substance, body, or device that readily conducts heat, electricity, sound, etc.
- 22. a horizontal row in the periodic table
- 24. one of the elements of Group 18 of the periodic table; noble gases are unreactive
- 26. subatomic particle that has a positive charge and is found in the nucleus of an atom
- 30. A one or two letter abbreviation for an element