Across
- 3. an element that has some properties of a metal and some properties of a nonmetal
- 4. the number of protons contained in each nucleus of its atoms of the element.
- 5. a substance that cannot be broken down into a simpler substance by ordinary chemical means
- 7. describes how likely an element is to form bonds with other elements
- 10. an element or substance that conducts heat and electricity
- 12. the smallest unit of an element that has all of the propeties of the element
- 13. three laws
- 15. a bond formed by the transfer of electrons
- 17. a chart that organizes information about all of the known elements accourding to thier properties
- 19. a horizontal row ( left to right) in the periodic table
- 20. electrons that are located in the outermost energy level of an atom
Down
- 1. the single capital letter or capital letter followed by a lower case letter or letters that represents the name of the element
- 2. a bond formed when two atoms share valence electrons
- 6. an element that does not conduct electricity or heat and is usually a gas at room temperature
- 8. the region surrounding the nucleus of an atom where the electrons are located
- 9. the smallest unit of a compound that has all of the properties of the compound
- 11. a vertical column (up and down) on the periodic table
- 14. anything that has mass and volume
- 16. number of protons and neutrons in the nucleus of one atom of the element
- 18. an atom that has gained or lost one or more electrons