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Science

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Across
  1. 1. Anything that has mass and volume
  2. 3. Simplest type of pure substance
  3. 4. The center of an atom
  4. 6. Joining of two atomic nuclei of smaller mass to form a single nucleus of larger mass
  5. 7. Substance that does the dissolving in the solution
  6. 9. Chemical reaction in which two or more simple substances combine to form a new, more complex substance
  7. 10. The smallest part of an element that has all the properties of an element
  8. 14. Substance that appears to be the same throughout
  9. 15. Amount of time it takes for half of the atoms in a given sample of an element to decay
  10. 16. Number of protons in the nucleus of an atom
  11. 17. Combination of atoms formed by a covalent bond
  12. 18. Chemical reaction in which energy is released
  13. 20. Electron in the outermost energy level of an atom
  14. 21. A positively charged particle in the nucleus of an atom
  15. 22. amount of matter in an object
  16. 23. An atom that has become charged due to the loss or gain of electrons
  17. 25. Change of a gas to a liquid
  18. 26. Member of element Family 1 that has one valence electron
  19. 29. Chemical reaction in which different atoms in two different compounds replace each other
  20. 31. Process by which a substance becomes a new and different substance
  21. 33. Element that has properties of both metals and nonmetals
  22. 35. A neutral particle in the nucleus of an atom
  23. 37. Measure of the motion of molecules
  24. 38. Substance that enters into a chemical reaction
  25. 39. Chemical reaction in which energy is absorbed
  26. 41. Substance made up of molecules that contain more than one kind of atom; two or more elements chemically combined.
  27. 42. Member of Family 18 of the periodic table; elements have atoms with 8 valence electrons and unreactive
  28. 43. Bond that involves the sharing of electrons
  29. 44. Force acting over a distance to move an object
  30. 46. Homogeneous mixture of a few substances in a single physical state
  31. 48. Substance that is dissolved in a solution
Down
  1. 1. Matter that consists of two or more substance mixed; but not chemically combined
  2. 2. mass per unit volume
  3. 5. Bond that involves the transfer of electrons
  4. 8. factor being tested
  5. 11. A negatively charged particle found in an area outside the nucleus of an atom
  6. 12. Process by which a substance changes phase
  7. 13. Chemical reaction in which an uncombined element replaces an element that is part of a compound
  8. 16. rate of change in velocity
  9. 19. Opposition to the flow of electric charge
  10. 24. Amount of space an object takes up
  11. 27. Weighted average of the mass numbers of an element's naturally occurring isotopes
  12. 28. Tendency of objects to remain in motion or to stay at rest unless acted upon by an outside force
  13. 30. Vaporization that takes place at the surface of a liquid
  14. 32. Substance that does not appear to be the same throughout
  15. 34. Atom that has the same number of protons(atomic number) as another atom but a different number of neutrons
  16. 36. Substance produced by a chemical reaction
  17. 40. The ability to do work
  18. 45. Rate at which work is done or energy is used
  19. 47. A solution of two metals or a metal and a nonmetal that has the properties of a metal