Atoms, Elements and The Periodic Table Vocab Crossword

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Across
  1. 6. the smallest unit of an element that has all of the properties of the element; basic building block of matter.
  2. 7. anything that has mass and takes up space.
  3. 10. a substance that cannot be broken down into a simpler substance by ordinary chemical means.
  4. 11. a chart that organizes information about all of the known elements according to their properties.
  5. 14. the smallest unit of a compound that has all of the properties of the compound.
  6. 16. Number – the number of protons contained in each nucleus of its atoms of the element. Located over the elemental symbol (at the top of the element box on the periodic table).
  7. 18. a region where there is a high probability of finding an electron.
  8. 20. elements that are made by scientists in a laboratory and do not exist in nature. Synthetic elements are typically identified as any element with the atomic number of 93 and up.
  9. 21. A vertical column (up and down) on the periodic table.
Down
  1. 1. This describes how likely an element is to form bonds with other elements.
  2. 2. a bond formed when two atoms share valence electrons.
  3. 3. Mass – the number of protons and neutrons in the nucleus of one atom of the element. Located under the elemental symbol (at the bottom of the element box on the periodic table).
  4. 4. electrons that are located in the outermost energy level of an atom.
  5. 5. the single capital letter or capital letter followed by a lower case letter or letters that represents the name of the element.
  6. 8. A horizontal row (left to right) in the periodic table.
  7. 9. elements and/or compounds that when put together are unable to react chemically.
  8. 12. an element that does not conduct electricity or heat and is usually a gas at room temperature.
  9. 13. the region surrounding the nucleus of an atom where the electrons are located.
  10. 14. an element that has some properties of a metal and some properties of a nonmetal.
  11. 15. a bond formed by the transfer of electrons (when valence electrons of one atom are transferred to the outer energy level of another atom).
  12. 17. a charged atom or bonded atoms that have gained or lost one or more electrons.
  13. 19. an element or substance that conducts heat and electricity.