Chemistry in Action

123456789101112131415161718192021222324252627282930313233343536373839404142
Across
  1. 1. A group of elements which lose 2 valence electrons during chemical bonding.
  2. 3. Materials which donate OH- ions in aqueous solution.
  3. 6. The relative amount of matter in one atom of a given element (Hint: 2 words).
  4. 8. A group of elements which are very stable and unreactive.
  5. 9. A state where particles are able to slide past each other, incompressible, able to flow.
  6. 10. A group of elements which lose electrons, are malleable & ductile, good conductors of heat and electricity.
  7. 13. Often called the “planetary model” of atom structure.
  8. 15. A group of elements which generally gain electrons, are brittle solids, vary in state and reactivity.
  9. 17. Whole numbers placed in front of elements/compounds/molecules within a chemical equation.
  10. 19. Changing the coefficients of a reaction until reactant and product atoms are equal.
  11. 22. One or more material/s which undergo rearrangement of atoms to form new entities.
  12. 23. A group of elements which may lose or gain 4 valence electrons during chemical bonding.
  13. 24. A group of elements which have 5 valence electrons in atoms and form -3 ions.
  14. 27. All of these elements have 3 valence electrons in their atoms and form +3 ions.
  15. 28. A group of elements which are very stable and unreactive.
  16. 30. All of these elements have 6 valence electrons in their atoms and form -2 ions.
  17. 31. A group of elements which are generally arranged in order of increasing atomic mass moving to the right.
  18. 32. Charged particles.
  19. 35. A bunch of elements with similar characteristic properties.
  20. 38. Group B elements, tend to lose 1 or more electron/s during chemical bonding, good conductors.
  21. 39. Subatomic particles with a mass of 1amu, no charge, and are found in the atom’s nucleus.
  22. 41. Elements which have some characteristic properties of metals and nonmetals.
  23. 42. Use of chemical symbols to represent compounds, molecules, or atoms within chemical equations.
Down
  1. 2. A group of elements which have 1 valence electron as atoms and form +1 ions.
  2. 4. Materials which donate H+ ions in aqueous solution.
  3. 5. A whole number used to represent the number of protons in an atom.
  4. 7. Positively charged particles.
  5. 11. A statement of all reactant and product atoms/molecules/compounds involved in a reaction.
  6. 12. A group of elements which generally gain 1 valence electron during chemical bonding.
  7. 14. Subatomic particles with a mass of 1/2000amu, a – charge, and are found moving fast outside the nucleus.
  8. 16. A phrase used to represent ion charge or oxidation number of an atom.
  9. 18. Examples include: solids, liquids, gases, and plasma.
  10. 20. A state where particles are moving very fast, have lots of space between particles, very compressible, flow.
  11. 21. Whole numbers placed to the lower right of an ion to represent the number of atoms present.
  12. 25. Atoms with the same number of protons but different numbers of neutrons.
  13. 26. A law stating that mass of reactants is equal to mass of products.
  14. 29. When all particles are balanced in terms of equal numbers of + and – charges.
  15. 33. A state where particles are only able to vibrate slightly around a fixed point, incompressible, flow very slowly.
  16. 34. The outermost energy level which determines the level of reactivity of an atom.
  17. 36. Subatomic particles with a mass of 1amu, a + charge, and are found in the atom’s nucleus.
  18. 37. A vertical column on the periodic table of elements.
  19. 40. Negatively charged particles.