Physical Science top 50 vocabulary terms

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Across
  1. 3. The transfer of heat by the movement within a liquid or gas
  2. 6. the tendency of an object to resist a change in its motion
  3. 8. A measure of the average energy of motion of the particles of a substance.
  4. 10. A disturbance that transfers energy from place to place
  5. 13. any compound that forms H+ ions in solution, tastes sour, and has a pH less than 7
  6. 17. a compound that produces hydroxide ions in solution, tastes bitter and feels slippery
  7. 19. a bond formed when atoms share one or more pairs of electrons
  8. 22. The force of attraction or repulsion of magnetic materials
  9. 24. The rate at which velocity changes
  10. 25. A pure substance made of only one kind of atom
  11. 26. the number of complete wavelengths that pass a point in a given time
  12. 30. A material that does not allow heat or electrons to move through it easily.
  13. 31. the amount of matter in an object
  14. 32. stored energy
  15. 34. A form of matter that has a definite shape and volume
  16. 36. An apparent change in the frequency of a sound when the source or observer is moving
  17. 37. A horizontal row of elements in the periodic table
  18. 39. The direct transfer of heat from one substance to another by touching.
  19. 43. A state of matter that has no definite shape but has a definite volume.
  20. 44. A nuclear reaction in which a nucleus splits into smaller nuclei with the simultaneous release of energy
  21. 45. a state of matter that consists of free-moving ions and electrons
  22. 46. positively charged subatomic particles
  23. 48. a device that changes electrical energy to mechanical energy
Down
  1. 1. A measurement of how much solute exists within a certain volume of solvent
  2. 2. Smallest particle of an element that has its properties
  3. 4. energy of motion
  4. 5. Electrons on the outermost energy level of an atom
  5. 7. a path for an electrical current to flow around
  6. 9. Material through which a wave travels
  7. 11. A state of balance in which solute is dissolving into the solution and coming out of the solution
  8. 12. the degree of compactness of a substance, mass divided by volume.
  9. 13. A flow of electric charge that regularly reverses its direction.
  10. 14. A measure of the force of gravity on an object
  11. 15. Atoms of the same element that have different numbers of neutrons
  12. 16. A machine that converts mechanical energy into electrical energy
  13. 18. smallest unit of most compounds, two or more atoms held together by covalent bonds
  14. 20. The process by which two or more small nuclei fuse to make a bigger nucleus and release energy
  15. 21. A push or a pull
  16. 23. Speed in a given direction
  17. 27. A substance made up of atoms of two or more different elements joined by chemical bonds
  18. 28. A force of attraction between objects that is due to their masses.
  19. 29. an element that is shiny and that conducts heat and electricity well, locate on the left and middle of the periodic table
  20. 33. The bouncing back of a wave when it hits a surface through which it cannot pass.
  21. 35. A result of a force moving an object a certain distance.
  22. 38. A form of energy caused by the movement of electrons.
  23. 39. The attractive force that holds atoms together
  24. 40. A chemical bond formed when one or more electrons are transferred from one atom to another
  25. 41. Elements in group 8A of the periodic table. Have no charge and are gases
  26. 42. A state of matter with no definite shape or volume
  27. 47. A homogeneous mixture of two or more substances in which a solute is dissolved in a solvent