Scie D

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