Matter: What Chemistry is All About

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Across
  1. 7. attributes based on the position and characteristics of particles and can be measured without a change in the identity of the material.
  2. 9. the ability to transfer heat or electrons through a substance.
  3. 10. a state of matter in which the particles have enough energy to partially overcome the attractive forces. It will take on the shape of its container.
  4. 13. anything that takes up space and has mass.
  5. 15. a substance that consists of atoms of different elements chemically bonded together.
  6. 17. the measure of randomness or disorder. A measure of the increasing unavailability of useful energy.
  7. 18. a process that releases heat energy.
  8. 22. a state of matter in which the particles have relatively little energy and cannot overcome the attractive forces. The particles remain in fixed positions with set distances between them.
  9. 23. a substance that cannot be broken down by ordinary chemical means into anything that is both stable and simpler and whose atoms all have the same atomic number.
  10. 26. a number that appears in front of a chemical formula and indicates how many units of that substance are present.
  11. 30. mass cannot be created or destroyed. It can only change form.
  12. 31. the physical change from solid directly to gaseous form without becoming a liquid in between.
  13. 36. a type of element whose atoms bond into two-atom units.
  14. 37. a measure of the average kinetic energy of the atoms, molecules, or ions in matter.
  15. 38. a homogeneous mixture of two or more substances.
  16. 39. a temperature scale in which there are 180 divisions between the freezing and boiling points of water.
  17. 40. an element whose atoms exist independently.
  18. 42. the ability to be drawn into a wire.
  19. 44. the physical change from liquid to solid form.
  20. 46. them temperature at which all molecular motion would cease. The coldest temperature possible.
  21. 47. the ability to do work.
  22. 49. a one or two letter representation of an element.
  23. 50. the measure of the total kinetic energy of the molecules or ions in matter.
  24. 51. energy cannot be created or destroyed. It can only change form.
Down
  1. 1. how closely packed the particles of a material are.
  2. 2. energy due to motion.
  3. 3. the amount of energy required to raise the temperature of 1 gram of water 1 degree Celsius.
  4. 4. a combination of subscripts and chemical symbols that indicate the number and kinds of atoms that are present in a compound.
  5. 5. during any energy transformation, some energy goes to an unstable form.
  6. 6. a temperature scale that divides the range from the freezing point to boiling point in 100 increments and labels its zero as absolute zero.
  7. 8. the physical change from gas to liquid.
  8. 11. the most abundant form of matter. It consists of a gaseous sea of high-velocity electrons, ions, and neutral atoms.
  9. 12. two or more covalently bonded atoms found as a separate, distinct, independent unit.
  10. 14. the study of energy transformations in chemical and physical processes.
  11. 16. the theoretical 5th state of matter that will exist at absolute zero.
  12. 19. the capability of matter to be shaped by pounding.
  13. 20. a temperature scale that divides the range from freezing point to boiling point into increments of 100.
  14. 21. a mixture existing in only one distinctly separate region with its own properties. Also called a solution.
  15. 22. a number written at the lower right of a chemical symbol in a formula to indicate the number of components immediately preceding it.
  16. 24. an element whose atoms bond in multi-atom units.
  17. 25. when a substance is altered without changing its identity.
  18. 27. the physical change from solid to liquid.
  19. 28. describes how one substance will react in the presence of other substances.
  20. 29. the quantity of heat energy required to raise the temperature of 1 pound of water 1 degree Fahrenheit.
  21. 32. a mixture composed of two or more distinctly separate phases that have their own properties.
  22. 33. the SI unit of energy equal to 1 kgm^2/s^2.
  23. 34. the particles of matter are in constant motion and the properties of matter are consequences of that motion.
  24. 35. thermal energy in transit from one object to another.
  25. 41. two or more pure substances physically combined with no definite proportions.
  26. 43. a change in which a substance loses its characteristics and becomes one or more new substances.
  27. 45. a process that absorbs heat energy.
  28. 46. a neutral particle with a centrally located nucleus, consisting of protons and neutrons. It is surrounded by electrons and is the smallest representative unit in an element.
  29. 48. a state of matter in which the particles have enough energy to overcome the attractive forces. It has no definite size or shape.