General Chemistry

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Across
  1. 3. a branch of chemistry that studies and uses instruments and methods used to separate, identify, and quantify matter.
  2. 8. tells how close a measured value is to the "true" value
  3. 9. a physical property of matter that changes when the amount of matter in a sample changes. Examples are mass, volume, length, and charge.
  4. 11. has no definite shape and volume and the structure of particles are far away from each other.
  5. 12. a property of matter that shows no change in composition when a substance is seperated.
  6. 13. a process in which a conversion factor which is written in a form of ratio is used to change the units given in the data to the units desired.
  7. 16. a state of matter that is often thought of as a subset of gases, but the two states behave very differently.
  8. 17. number of protons present in the nucleus of every atom
  9. 20. combination of at least two atoms in a definite proportion, bound together by covalent bonds
  10. 22. mass of an atom
  11. 28. separation of a mixture by passing it in solution or suspension or as a vapor through a medium in which the components move at different rates.
  12. 32. energy required to remove an electron from the atom
  13. 33. one way of seperating a mixture used when 2 solids are going to be seperated.
  14. 36. tells an object how hot or cold an object is.
  15. 37. is concerned with the properties and behavior of inorganic compounds, which include metals, minerals, and organometallic compounds.
  16. 38. the quantity of matter in an object.
  17. 40. a branch of science that involves the study of the composition, structure and properties of matter.
  18. 41. ion that has a positive net charge
  19. 42. water molecules in the air cool and slow down and the attractions overcome their speed and join together, forming liquid water.
  20. 43. ion with negative net charge
  21. 44. process by which a substance changes from the solid phase to the liquid phase.
  22. 45. he transition of a substance directly from the solid to the gas state, without passing through the liquid state.
  23. 46. it has a characteristics of indefinite shape but has definite volume; the structure of particles are close together.
  24. 47. tabular display of the chemical elements
  25. 50. process of separating components of mixtures by using magnets to attract magnetic materials.
Down
  1. 1. way of seperating a mixture used when a liquid and a solid is going to be seperated.
  2. 2. a phase transition in which gas transforms into solid without passing through the liquid phase.
  3. 4. anything that has mass and takes up space
  4. 5. branch of chemistry concerned with the application of the techniques and theories of physics to the study of chemical systems.
  5. 6. a branch of chemistry that studies the structure, properties and reactions of organic compounds, which contain carbon in covalent bonding.
  6. 7. is the process of determining the extent of the dimensions, quantity, or extent of something.
  7. 10. kr;noble gas
  8. 14. a physical property of matter that does not change as the amount of matter change; it doesnt affect the value, amount or condition of a certain substance.
  9. 15. molecule that contains only two atoms
  10. 18. a substance made by combining two or more different materials in such a way that no chemical reaction occurs.
  11. 19. the study of chemical processes within and relating to living organisms.
  12. 21. a phase transition where a liquid turns into a solid when its temperature is lowered below its freezing point.
  13. 23. one of the states of matter that has a definite shape & volume and the structure of particles is very compact.
  14. 24. a state of matter that occurs when a group of atoms cooled to within a hair of absolute zero. When they reach that temperature the atoms are hardly moving relative to each other; they have almost no free energy to do so.
  15. 25. a property of matter that shows a big change in composition when a substance is seperated.
  16. 26. the digits in any measurement that are known with certainty, plus one digit which is uncertain.
  17. 27. occurs when the surface of the liquid is exposed, allowing molecules to escape and form water vapor.
  18. 29. expressed as N x 10^n
  19. 30. amount of space occupied by a substance.
  20. 31. molecule that consists of more than two atoms
  21. 34. one of the common measurements done in laboratory; involves getting mass,volume and temperature of an object.
  22. 35. is the ratio of the mass of an object to the volume it occupies.
  23. 39. refers to how the values agree closely with one another
  24. 48. a pure substance that is made from a single type of atom.
  25. 49. 2 or more different elements combined