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M. Phillips- 20 front to back Name: ________________________ Date: _______________________ Physical Science Unit Study Guide Directions: Match the words in the word back to the correct definition atom mass energy solution magnet molecule matter electromagnet conductors insulators heat dissolve physical properties states of matter physical change chemical properties chemical change electric charge magnet poles static electricity electric current electric circuit parallel circuit series circuit 1. __________________ The amount of matter in an object. 2. __________________ The smallest particle of matter. 3. __________________ A change in matter that produces new kinds of matter. 4. __________________ A change in the size, shape, or state of matter that does not change it into a new kind of matter. 5. __________________ Material that an electrical charge can move through easily. 6. __________________ Material that electric charges do not move through easily. 7. __________________ An object that attracts certain materials, mainly iron. 8. __________________ The two areas on a magnet with the greatest magnetic force. 9. __________________ The three forms that matter usually takes: solid, liquid, and gas. 10. ___________________ A continuous flow of electric charges. 11. ___________________ A strong temporary magnet that uses electricity to produce magnetism. 12. __________________ A circuit that has more than one pathway 13. __________________ An electric charge that builds up on a material like a balloon. 14. __________________ A circuit with one single pathway 15. __________________ A single particle of matter made up of two or more atoms joined together. 16. __________________ Anything that has mass and take up space. Directions: Fill in the blanks 17. The molecules in a gas do not stay close together. 18. When paper is turned into ash, this is an example of a chemical change. 19. When a cup of warm water is put in the refrigerator thermal energy is ___taken away from the water____________. 20. When the sun shines on a parking lot, thermal energy is ______added to the parking lot_______________ . 21. When solid iron is melted, thermal energy is ____added____ the iron. 22. When thermal energy is added, particles move _faster___ and _______farther apart__________. 23. When thermal energy is taken away, particles move ___slower___ and ____closer together_____________ 24. A change in state is a ___physical__________ change. 25. Making a solution is a ____physical________ change. 26. Rust is a _____chemical_____ change. 27. List four clues that signal a chemical change. a. bubbles__________ b. change in color, state or temperature__ c. _____smell____________ 28. A built-up electric charge is called _____static electricity________ . 29. Examples of conductors: 30. Examples of insulators: 31. Flipping a switch on __closes_____ a circuit. 32. Flipping a switch off __opens_______ a circuit. 33. The direction of a compass needle always points ___north________ . 34. What makes an electromagnet different from a bar magnet? 35. _electromagnet can be turned on and off and uses electricity 36. ___A bar magnet does not use electricity and can not be turned on or off 37. Circuit A is a ___series_____ circuit. 38. Circuit B is a ___parallel______ circuit. 39. List the three parts that every working circuit has a. power source (battery)___ b. _wire (conductor)______ c. _something that uses electricity (light bulb)_______ 40. Draw two magnets that attract. N N S S 41. Draw two magnets that repel. N S S N 42. Draw a sample of matter with a positive charge + + + + + - - 43. Draw a sample of matter with a negative charge. - - + - + + + - - - - 44. Draw a sample of matter with a neutral charge. + - - + + + 45. List the three properties of matter. a. ___size___________ b. ____shape______________ c. ___color__________________ 46. An example of a chemical property is _ability to burn___ 47. Chemical property can be observed: _when matter is changed into a new kind of matter 48. An example of a physical property is _color, size or shape____ 49. Physical property can be observed: ___without changing matter into something new _____ 50. When a puddle of water evaporates, does the water change into a new kind of matter? Why or Why not? Changing form a liquid to a gas is a change in state. Changes of state are physical changes, so an evaporating puddle does not form a new kind of matter. 51. Like charges __repel____. 52. Unlike charge _attract_______ . 53. List the three parts of an electromagnet. a. Power source (battery)_____ b. Conductor (wire) c. _An iron core wrapped with a conductor (bolt wrapped wire) Directions: Complete the Flow Map & Venn Diagram 54. Sequence the events that lead to an electric discharge. When the object touches something that is electrically neutral, the charge is released. ______ An overall positive or negative charge builds up on an object __ Static Electricity Charges _build-up in on place Both Electrical charges Electric Circuit Charges continuously flow Solid Liquid Gas You will be given a chart that is blank except for the diagrams. You will have to fillin the state of matter and the molecules.