Scie E

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Across
  1. 1. Phase transition directly from a solid to a gas without passing through the liquid phase
  2. 3. Italian scientist known for his contributions to the mole concept in chemistry
  3. 5. Arrangement of elements based on their atomic number in the periodic table
  4. 6. Representation of a chemical reaction using symbols and formulas
  5. 9. Type of bond formed by the sharing of electrons between atoms
Down
  1. 2. Variant of an element with the same number of protons but a different number of neutrons
  2. 4. Process in which a substance loses electrons during a chemical reaction
  3. 6. Biological catalyst that speeds up chemical reactions in living organisms
  4. 7. Laboratory technique used to determine the concentration of a solution by reacting it with a standard solution
  5. 8. Number of electrons an atom can lose gain or share in a chemical bond