Interactions of Matter

The student will investigate the interactions of matter.

 Matter Day 5 - Physical or Chemical Changes

Coach Lesson 44

Powerpoint  http://www.learnnc.org/media/lessons/LouiseWhealton5232002459/phys_and_chem_changes.ppt

Physical changes - do not change the composition of matter

• water evaporating
• clothes drying in a dryer
• changing the size of food items
• chopping wood
• erosion

chemical changes - do change matter to new kinds of matter

Indications of chemical change

• changes the composition of the substance.
• gas bubbles
• color change
• disappearance of color
   
• fruit rotting, food spoiling
• rust
• decay of plants
• burning wood
• silver tarnishing
• cooking and baking
   

Examples

1. car burning gas (chemical)
2. sweat evaporating from skin (physical)
3. dirt added to puddle (physical)
4. cooks baking bread in school kitchen (chemical)
5. sun burning skin (chemical)
6. rust on car (chemical)
7. baking soda fizzes with vinegar (chemical reaction).
8. cornstarch turns black with iodine (chemical reaction).
9. sugar turns brown, then black with heat (chemical reaction).
10. sugar and salt dissolve in water (physical change).
11. wood ground to sawdust (physical)
12. sifting flour (physical)
13. sharpening a pencil (physical)
14. cooking an egg  (chemical)
15.  burning charcoal  (chemical)
16. melting ice (physical)
17. Burning of a building  (chemical)
18. Adding sugar to lemonade (physical)
19. Water changing to steam (physical)
20. Rusting of iron (chemical)
21. Fluffy egg whites (physical)
22. Leaves changing color (chemical)
23. Milk turning sour (chemical)
24. Faded cloth (chemical)
25. Churning of milk (physical)
26. Baking rolls (chemical)
27. Ripening of tomatoes (chemical)
28. A stick broken into small pieces (physical)
29. Growing vegetables (chemical)
30. Formation of a gas bubble (chemical)
31. Disappearance of color (chemical)
32. Making ice cream (physical)
33. Using hot water to expand a metal cup (physical)
34. Opened canned fruit left out of the refrigerator for a few days (chemical)
35. Digestion of food (chemical)
36. Popcorn popping (physical)
37. Freezing water (physical)
     

Changing States - Does it Matter?  http://www.iit.edu/~smile/guests/chgstate.htm

Chemical Reactions Experiments with Alka-Seltzer http://www.alka-seltzer.com/as/experiment/student_experiment.htm

Mystery Powders http://www.uen.org/Lessonplan/preview.cgi?LPid=2176 This activity gives several powders and substances that can undergo a physical or chemical change and has students evaluate each example. A recording sheet is provided.

Feel of each Mystery Powder

	Mystery Powder's Reaction to Heat
	Mystery Powder's Reaction to Iodine
	Mystery Powder's Reaction to Vinegar

http://www.uen.org/Lessonplan/preview.cgi?LPid=2690 Describing and comparing physical changes are the topics found in this lesson plan. Lesson plan is for grade 5.
 

Day 6 Acids and Bases

Coach Lesson 45

http://www.visionlearning.com/library/module_viewer.php?mid=58

http://scienceview.berkeley.edu/showcase/flash/juicebar.html

http://www.nclark.net/AcidsBases