| A | B |
|---|
| Transfer of energy through motion. | 2. What is the definition of work? |
| newton-meters or joules | 3. What unit is used to measure work? |
| at the top | 4. When you ride a playground swing, what point is your potential energy the greatest? |
| kinetic energy | 5. What type of energy results from vibrations and movement within and between particles? |
| no | 1. Does energy have to involve motion? |
| lowered | 6. When waste heat is added to freshwater, what happens to the dissolved oxygen content of the water? |
| yes | 7. According to the law of conservation of energy, can mechanical energy be changed to heat energy? |
| thermal | 8. When you put on the brakes of a bicycle, friction causes some of the mechanical energy to change to what type of energy? |
| yes | 9. Do all the particles that make up matter have kinetic energy? |
| total energy | 10. Is the thermal energy of a material determined by the total energy of the particles in the material or part of the energy of the particles? |
| yes | 11. Can heat energy move from a material with a higher temperature to a material of lower temperature? |
| no | 12. Is the motion of the particles that make up a sample of matter related to the motion of the matter itself? |
| Cool water then release. | 13. How can thermal pollution be reduced? |
| yes | 14. Is the melting point of a substance the same temperature as the freezing point for the substance? |
| physical | 15. Is the odor of a substance a physical or chemical property? |
| mass | 16. The law of conservation of _____ states that the mass of all substances before a chemical change equals the mass of all substances after the change. |
| mixtures | 17. Are colloids mixtures or substances? |
| yes | 18. Can homogeneous mixtures be separated by physical properties? |
| physical | 19. Is color a physical or a chemical property? |
| physical | 20. Is the breaking of a glass window a physical or chemical change? |
| increases | 21. Does the kinetic energy of an object increase or decrease as its velocity increases? |
| decreases | 22. As the temperature of a material decreases, does the average kinetic energy also decrease or does it increase? |
| all | 23. Do all the particles that make up a sample of matter have kinetic energy or just the ones that make up gases and liquids? |
| energy to raise temp of 1kg 1K | 24. What is specific heat? |
| temperature | 25. What type of energy is a measure of the average kinetic energy of a matter's particles? |
| potential | 26. Does kinetic or potential energy depend on the object's position? |
| insulator | 27. What is the term for the material that reduces the flow of heat by conduction, convection, and radiation called? |
| radiant energy | 28. In what form does energy from the sun travel to Earth? |
| inclined plane | 29. What type of simple machine is represented by a winding mountain road? |
| compound machine | 30. What is the machine called that is formed when two or mor siimple machines work together? |
| solid | 31. What state of matter has a definite volume and a define shape? |
| solid | 32. What state of matter has particles arranged in repeating geometric patterns? |
| plasma | 33. What state of matter is a gaslike mixture with no definite volume or shape that is made up of positively and negatively charged particles? |
| liquid | 34. What state of matter has a definite volume but no definite shape? |
| gas | 35. In what state of matter are the particles free to move in all directions until they have spread evenly throughout their container? |
| expands | 36. What happens to matter when it is heated? |
| contains unwanted materials - pollutants | 37.What is found in polluted water that causes it to be unacceptable for drinking or other specific purposes? |
| thermal | 38. What type of pollution is caused by excess heat in rivers? |
| more quickly | 39. Do the particles in matter move more quickly or more slowly when matter is heated? |
| plasma | 40. what is the most common state of matter in the universe? |
| thermal | 41. What type of pollution is produced by the hot water released by electric power plants? |
| more slowly | 42. do the particles that make up a solid move more quickly or more slowly than the particles that make up a gas? |
| increases | 43. As the temperature of a gas increases, what happens to the volume of the gas if the pressure remains the same? |
| increases | 44. As the volume of a gas decreases, what happens to the pressure of the gas if the temperature remains the same? |
| solution | 45. What is another name for a homogeneous mixture? |
| physical | 46. Is the color of an object considered a chemical or a physical property? |
| 2 or more substances combined but maintain own properties | 47. What is the definition of a mixture? |
| physical | 48. Is the ability of metal to bend a physical or chemical property? |
| compound | 49. Is water an element or a compound? |
| chemical | Is wood burning a chemical or physical change? |
| physical | 51. Would the process of evaporating water from seawater be a physical or chemical change? |
| chemical | 52. Is a substance's flammability a physical or chemical property? |
| substances | 53. Are elements and compounds considered to be substances or mixtures? |
| substances and mixtures | 54. matter can be classified as what two things? |
| heterogeneous | 55. Is a colloid a homogeneous or heterogeneous mixture? |
