Physical Science Chapter 4 Vocab

Edit Answers
1234567891011121314151617181920
Across
  1. 4. He led to reorganizing the period table on the basis of atomic number. He used a new technique called X-ray spectroscopy to determine the number the atomic number for each element.
  2. 6. Characteristics between those of metals and nonmetals. State: exist as a brittle solid with metallic luster. Conductivity: are fairly conductive increasingly so as temperature rises. Reactivity: varies
  3. 7. He used letters used to represent each element and superscripts to represent number of atoms.
  4. 9. A table of the chemical elements arranged in a way that displays their periodic properties in relationship to their atomic numbers.
  5. 11. Set of elements in the same column on the periodic table. Also known as a group.
  6. 14. He first recognized groups of three elements with similar properties and called them triads.
  7. 18. The properties of elements vary in a periodic way with their atomic numbers.
  8. 19. A row on the periodic table.
  9. 20. He organized elements with similar characteristics in columns like the modern periodic table
Down
  1. 1. typically have 4 or more valence electrons and do not exhibit the general properties of metals. State: exist as a gas, liquid, or dull brittle solid. Conductivity: are poorly conductive, electrically and thermally. Reactivity: varies
  2. 2. He demonstrated that combustion requires the presence of oxygen.
  3. 3. Groups 13-16 and contain metals, nonmetals, and metalloids.
  4. 5. Electrons in the outermost energy level of a neutral atom.
  5. 8. Every element in this family has one valence electron (Group 1). Very reactive and always found in parts of compounds
  6. 9. Repeated pattern when elements are arranged in order by increasing atomic mass.
  7. 10. The measure of an atoms ability to attract and hold electrons when bonded to other atoms.
  8. 12. These elements make up Group 2 and have 2 valence electrons.
  9. 13. This notation consists of the elements physical symbols surrounded by the atoms valence electrons.
  10. 15. He developed the law of octaves through arranging elements by atomic mass.
  11. 16. He was an alchemist who believe that it was possible to change one element into another. In 1661, he published the Skeptical Chemist, in which he called for the experimentation to be the basis of science.
  12. 17. 80% of all elements. State: exist as a dense, ductile, malleable, lustrous solid. Conductivity: are highly conductive, electrically and thermally. Reactivity: are reactive, especially with nonmetals.