2nd 9 weeks Chemistry Test

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Across
  1. 5. A neutral group of atoms that are held together by covalent bonds
  2. 8. A homogeneous mixture of two or more substances uniformly dispersed throughout a single phase
  3. 9. The number of atoms or molecules in 1 mol
  4. 11. A substance or molecule that participates in a chemical reaction
  5. 12. The SI base unit used to measure the amount of a substance whose number of particles is the same as the number of atoms of carbon in exactly 12 g of carbon-12
  6. 15. The measured amount of a product of a reaction
  7. 20. The percentage by mass of each element in a compound
  8. 26. The maximum amount of product that can be produced from a given amount of reactant
  9. 28. A substance that dissolves in water to give a solution that conducts an electric current
  10. 29. Composed of dissimilar components
  11. 30. Reactant The substance that controls the quantity of product that can form in a chemical reaction
  12. 32. In a solution, the substance in which the solute dissolves
  13. 33. An explanation for swome phenomenon that is based on observation, experimentation and reasoning
  14. 34. Describes two or more liquids that can dissolve into each other in various proportions
  15. 35. An atom or molecule that has gained or lost one or more electrons and has a negative or positive charge
  16. 36. A solution that cannot dissolve any more solute under the given conditions
  17. 38. A chemical formula wthat shows the number and kinds of atoms in a molecule but not the arrangement of the atoms
  18. 39. In a solution, the substance that dissolves in the solvent
  19. 42. An ion made of two or more atoms
  20. 43. A method of expressing a quantity as a number multiplied by 10 to the appropriate powere
  21. 44. A solution that contains less solute than a saturated solution does and that is able to dissolve additional solute
Down
  1. 1. The law that states that a chemical compound always contains the same elements in exactly the same proportions by weight or mass
  2. 2. A solution that holds more dissolved solute than is required to reeach equilibrium at a given temperature
  3. 3. A chemical compound whose simplest units are molecules
  4. 4. The ability of one substance to dissolve in another at a given temperature and pressure
  5. 6. An ion formed from a single atom
  6. 7. A substance that dissolves in water to give a solution that does not conduct an electric current
  7. 10. The concentration of a solution expressed in moles of solute per kilogram of solvent
  8. 13. The ratio of the actual yield to the theoretical yield, multiplied by 100
  9. 14. The ratio of the mass of a substance to the volume of the substance
  10. 16. The law that states that mass cannot be created or destroyed in ordinary chemical and physical changes
  11. 17. An ion that has a negative charge
  12. 18. A compound composed of ions bound together by electrostatic attraction
  13. 19. Describes something that has a uniform structure or composition throughout
  14. 21. A chemical formula that shows the composition of a compound in terms of the realtive numbers and kinds of atoms in the simplest ratio
  15. 22. A combination of chemical symbols and numbers to represent a substance
  16. 23. A representation of a chemical reaction that uses symbols to show the realtionship between the reactants and the products
  17. 24. A small whole number that appears as a factor in front of a formula in a chemical equation
  18. 25. A substance that forms in a chemical reaction
  19. 27. A conversion factor that relates the amounts in moles of any two substances involved in a chemical reaction
  20. 31. A mathmatical technique that allows one to use units to solve problems involving measurements
  21. 37. The mass in grames of 1 mol of a substance
  22. 40. An ion that has a positive charge
  23. 41. An explanation that is based on prior scientific research or observations and that can be tested