2. WARM UP: Write your homework – leave it to be stamped! You can start a NEW table of contents, or draw a line for the 2 nd section of chemistry DateSession # ActivityPage # 9/17- 9/18 9 Physical Properties & Physical Changes 17

3. Every element on the Periodic Table has it’s own set of physical & chemical properties, that is what makes their “personalities” unique!!!

4. Property vs. Change What is the difference between a property and a change? Discuss with your table partner and come up with an answer to write in the box…

5. What is a Physical Property? A characteristic of an element or substance that can be observed or measured without changing its identity or structure. Use your 5 senses OR scientific measurements to describe or measure…

6. What is a Physical Change? A change that takes place without changing the identity or structure of the element or substance EXAMPLES: Dissolving Phase change Changing shape What are some other examples?

9. DENSITY Mass per volume of a material, or how much “stuff” is packed together in specific area. Formula to calculate density: d=m/v

10. SOLUBILITY A measure of how much of a substance dissolves in a given amount of another substance.

11. Solubility Side Note: Solvent = the substance that does the dissolving Solute = the substance that dissolves Insoluble = doesn’t dissolve

12. BOILING POINT The temperature at which a liquid changes to a gas.

13. MELTING POINT The temperature at which a solid changes to a liquid.

14. MAGNETISM A force of attraction or repulsion that exists between like and unlike poles.

15. MALLEABILITY The ability to be hammered, shaped, or rolled into thing sheets. Most metals are malleable.

16. Malleability Side Note: You may also hear the word ductile or ductility Ductility = the ability of a material to be stretched into a wire

17. CONDUCTIVTY The ability of a material or substance that allows electricity or heat to flow through it easily. Most metals are good conductors.

18. SPECIFIC HEAT The amount of heat or energy needed to raise 1 gram of a substance by 1 degree Celsius (1  C).

19. WARM UP: Write your homework – leave it out to be stamped. Find your test on the front counter and complete the yellow data tracker. Staple them together and put them back on the front counter. If you have your parent signature please get it out to be checked DateSession # ActivityPage # 9/19- 9/22 10 Chemical Properties & Chemical Changes 18 Chemical Change Mini Labs (ONE from the group gets turned in for a grade – tape into notebook when returned) 19

20. What is a Chemical Property? A characteristic that gives a substance the ability to change into a new substance…BUT the chemical change has to be happening to see the chemical properties!

22. CHEMICAL REACTIVITY The ability of a material or substance to react with another material or substance and form something entirely different.

23. TOXICITY The degree to which a chemical can harm an organism.

24. FLAMMABILITY The ability of a material or substance to burn or start on fire easily.

25. REACTIVITY WITH OXYGEN The ability of a material or substance (usually metals) to react with oxygen and cause them to rust, corrode, tarnish, or combust.

26. What is a Chemical Change? A change that results in the production of a new substance and cannot be reversed. EXAMPLES: Burning Rusting Cooking What are some other examples?

27. Evidence of a Chemical Change/Reaction: Color changes – color appears or disappears Temperature changes Gas/gas bubbles produced Fire/flame/light produced or explosion Precipitate is formed – a solid or solid particles forms out of 2 liquids

28. Homework Do some research and make a list of 5 ORIGINAL examples of physical changes and 5 ORIGINAL examples of chemical changes that we have not discussed in class! Complete = 100 Incomplete = 70 QUIZ NEXT CLASS ON PHYSICAL VS. CHEMICAL CHANGES! Physical Change ExamplesChemical Change Examples 1. 2. 3. 4. 5.

29. Labs to Examine Chemical Changes

30. Mini Lab 1: Make your prediction based on the items you see the teacher has… Watch closely…keep watching! Write your observations What was your “hint” that a chemical change occurred?

31. FRIENDLY REMINDERS!! **Absolutely none of the lab chemicals should come in contact with your mouth, eyes, or be breathed deeply!! **Appropriate behavior at all times! **This is a group grade, so put everyone’s name at the top of your paper right now. **You MUST complete the materials and prediction boxes BEFORE you do the experiment!!! GROUP 1 = SINK 1 GROUP 2 = SINK 2 GROUP 3 = SINK 3 ETC… GROUP 7 & 8 = SHARE A SINK

32. Group Roles Leader: Reads the directions for each lab, keeps group on task and following directions Materials/Clean Up: collects, returns, cleans and disposes of materials Data Discussion Leader: Ensures there is a conversation about each data table to share information. Quality Management: Ensures every student has detailed quality answers written in complete sentences using scientific language. REMEMBER, ONLY ONE WILL GET LAB GUIDE FROM YOUR GROUP WILL GET COLLECTED AND THAT WILL BE EVERYONE’S GRADE!!

33. Mini Lab 2: Send your materials person to get a cup of milk, a cup of vinegar and a stir stick Pour the vinegar into the milk and stir it like you mean it! Observe and record any changes that occur at this time. Send your materials person to BRING THE MILK CUP BACK UP TO THE COUNTER and throw the stir stick and vinegar cup in the garbage.

34. Mini Lab 3: Send your materials person up to pick up a ziploc bag with baking soda in it for each group Use the graduated cylinder to measure about 30 mL of vinegar Add the 30 mL of vinegar to the baking soda in the bag and SEAL THE BAG IMMEDIATELY Observe and record any changes that occur. Rinse your graduated cylinder and throw the zip lock bag in the trash AFTER YOU HAVE DUMPED THE CONTENTS INTO YOUR SINK.

35. Mini Lab 4: Send your materials person up to get a MYSTERY test tube for each group member Use the eyedroppers to add an eyedropper full of the cabbage juice (purple liquid) to each test tube…DO THIS ONLY ONCE Observe and record any changes that occur WAIT FOR FURTHER INSTRUCTIONS!!! Rinse your test tubes and return them to the test tube rack. Flush your eyedroppers with water. Rinse your bin & dry it! Clean up any spills at your group!

36. Mini Lab 5: Send your materials person to the sink to get approximately 5 ml of water in your graduated cylinder Put the water into your film canister & close the lid! Break one Alka-Seltzer tablet in half and hold it up in the air! ONCE WE ARE OUTSIDE… Put the Alka-Seltzer tablet into the film canister and snap the lid TIGHTLY QUICKLY put the canister on the ground CAP SIDE DOWN AND STEP BACK!

37. Your lab bin should be clean and should contain all of the supplies it did when you started! Clean, dry plastic bin 1 graduated cylinder 1 bottle of vinegar 1 small beaker of cabbage juice 2 pipettes (eyedroppers) 1 packet of Alka-Seltzer 1 film canister

38. Something to try at home WATCH THE VIDEO BELOW http://www.youtube.com/watch?v=VFvik_THcNQ 5 EXTRA CREDIT POINTS – EITHER VIDEO YOURSELF AND SHOW IT TO ME OR BRING IN YOUR “MILK STONE”

39. WARM UP: Update your Table of Contents Write your homework – leave it out to be stamped Get your Physical Changes/Chemical Changes chart out to be checked…parent signature too if I haven’t already checked it! Quiz your table partner/lab group on Physical & Chemical Properties!! DateSession # ActivityPage # 9/23- 9/24 11 Mythbusters Video Quiz (paste into page 20 after it is returned with a grade – Formal 65%) 20

40. Review Talk to your table partner and share the best example you have from your homework!

41. White Board Review Put your notes away Get a whiteboard, marker, and eraser from the shelf You might have to share an eraser with your table partner!

42. White Board Review Explain the difference between a property and a change.

43. White Board Review Explain how you know the difference between a physical change & a chemical change

44. White Board Review What were all 8 Physical Properties?

45. Physical Properties Malleability Solubility Density Magnetism Boiling Point Melting Point Conductivity Specific Heat

46. White Board Review What were all 4 Chemical Properties?

47. Chemical Properties Toxicity Flammability Chemical Reactivity Reactivity with Oxygen

48. White Board Review What were those 5 helpful hints that I gave you to identify a chemical change?

49. 5 things that tell you a chemical change/reaction has occurred: Color changes – (color appears or disappears) Temperature changes Gas/gas bubbles produced Fire/flame/light produced or explosion Precipitate is formed – a solid or solid particles forms out of 2 liquids

50. Whiteboard Quiz – Physical or Chemical? Number your whiteboard 1-10 You will write either a “P” or “C” You must get at least 9 correct to get a ticket

51. 1. Physical or Chemical? Freezing water…

52. 2. Physical or Chemical? Chopping Wood…

53. 3. Physical or Chemical? Dissolving salt in water…

54. 4. Physical or Chemical? Crumpled paper…

55. 5. Physical or Chemical? Burning Wood…

56. 6. Physical or Chemical? Melting Gold…

57. 7. Physical or Chemical? Dying Easter eggs…

58. 8. Physical or Chemical? Boiling Water…

59. 9. Physical or Chemical? Frying chicken…

60. 10. Physical or Chemical? Tarnish on the Statue of Liberty…

61. Whiteboard Quiz Part 2 – Which Property? Number your whiteboard 1-10 You must write the name of the property that matches the definition You must get at least 8 correct to get a ticket

62. 1. Which Property? The temperature at which a liquid changes to a gas.

63. 2. Which Property? Mass per volume of a material, or how much stuff is packed together in an area.

64. 3. Which Property? The ability to be hammered, shaped, or rolled into thin sheets. Most metals have this quality.

65. 4. Which Property? The ability to start on fire or to burn.

66. 5. Which Property? The amount of heat or energy needed to raise 1 gram of a substance by 1 degree Celsius (1  C).

67. 6. Which Property? A measure of how much of a substance dissolves in a given amount of another substance.

68. 7. Which Property? The temperature at which a solid changes to a liquid.

69. 8. Which Property? The ability of a material or substance to react with another material or substance and form something entirely new or different.

70. 9. Which Property? The ability of a material or substance that allows electricity or heat to flow through it easily. Most metals have this property.

71. 10. Which Property? The degree to which a chemical can harm an organism.

72. Whiteboard Quiz Part 3 – Which Property? Number your whiteboard 1-5 You must write the vocabulary word that completes the definition You must get 4 correct to get a ticket

73. 1. Vocabulary A _____________ is when a solid, or solid particles form when two liquids are combined.

74. 2. Vocabulary The ______________ is the substance that dissolves.

75. 3. Vocabulary The ______________ is the substance that does the dissolving.

76. 4. Vocabulary If something does not dissolve it is known as ________________.

77. 5. Vocabulary Similar to malleability, the physical property of _____________ means that a material can be stretched into a wire.

78. Fill in the video guide for a quiz grade!!

79. www.studyjams.com Physical & Chemical Changes of Matter