1. 1. Burning Toast 2. Glass Breaking 3. Chocolate Melting 4. Baking Soda/Vinegar 5. Frozen Water

2. 1. Burning Toast Chemical Change - gas formation, color and taste change 2. Glass Breaking 3. Chocolate Melting 4. Baking Soda/Vinegar 5. Frozen Water

3. 1. Burning Toast Chemical Change - gas formation, color and taste change 2.Glass Breaking Physical Change - substance is the same, just smaller 3.Chocolate Melting 4.Baking Soda/Vinegar 5. Frozen Water

4. 1. Burning Toast Chemical Change - gas formation, color and taste change 2.Glass Breaking Physical Change - substance is the same, just smaller 3.Chocolate Melting Physical Change – change in state of matter solid to liquid, but still chocolate until it starts to burn 4.Baking Soda/Vinegar 5. Frozen Water

5. 1. Burning Toast Chemical Change - gas formation, color and taste change 2.Glass Breaking Physical Change - substance is the same, just smaller 3.Chocolate Melting Physical Change – change in state of matter solid to liquid, but still chocolate 4.Baking Soda/Vinegar Chemical Change – gas formation and temp change 5. Frozen Water

6. 1. Burning Toast Chemical Change - gas formation, color and taste change 2.Glass Breaking Physical Change - substance is the same, just smaller 3.Chocolate Melting Physical Change – change in state of matter solid to liquid, but still chocolate 4.Baking Soda/Vinegar Chemical Change – gas formation and temp change 5.Frozen Water Physical change – change in state from liquid to solid but still water

7. 6.Water evaporating 7.Burning Wood 8. Baking a Cake 9. Roasting Marshmallow 10. Making Lemonade

8. 6.Water evaporating Physical change – change in state from liquid to gas, but still is H2O 7.Burning Wood 8. Baking a Cake 9. Roasting Marshmallow 10. Making Lemonade

9. 6.Water evaporating Physical change – change in state from liquid to gas, but still is H2O 7.Burning Wood Chemical change – new substance produced (ash/charcoal), gas formation and color change 8. Baking a Cake 9. Roasting Marshmallow 10. Making Lemonade

10. 6.Water evaporating Physical change – change in state from liquid to gas, but still is H2O 7.Burning Wood Chemical change – new substance produced (ash/charcoal), gas formation and color change 8. Baking a Cake Chemical change – from cake batter to cake, cannot get batter back into original form 9. Roasting Marshmallow 10. Making Lemonade

11. 6.Water evaporating Physical change – change in state from liquid to gas, but still is H2O 7.Burning Wood Chemical change – new substance produced (ash/charcoal), gas formation and color change 8. Baking a Cake Chemical change – from cake batter to cake, cannot get batter back into original form 9. Roasting Marshmallow Chemical change – as it’s melting, the change is physical, but when it starts to turn brown a chemical (color) change occurs 10. Making Lemonade

12. 6.Water evaporating Physical change – change in state from liquid to gas, but still is H2O 7.Burning Wood Chemical change – new substance produced (ash/charcoal), gas formation and color change 8. Baking a Cake Chemical change – from cake batter to cake, cannot get batter back into original form 9. Roasting Marshmallow Chemical change – as it’s melting, the change is physical, but when it starts to turn brown a chemical (color) change occurs 10. Making Lemonade Physical change – sugar crystals are still in the water and can be retrieved by evaporating the water. No new substance. Anything dissolved in water is a physical change.

13. 11.Making Putty 12. Mixing Dye and Bleach 13.Cutting Grass 14.Fireworks Exploding 14.Food Spoiling

14. 11.Making Putty Chemical - new substance formed out of glue and borax A precipitate was formed (solid) 12. Mixing Dye and Bleach 13.Cutting Grass 14.Fireworks Exploding 14.Food Spoiling

15. 11.Making Putty Chemical - new substance formed out of glue and borax 12. Mixing Dye and Bleach Chemical – the bleach changed the green to blue 13.Cutting Grass 14.Fireworks Exploding 15. Food Spoiling

16. 11.Making Putty Chemical - new substance formed out of glue and borax 12. Mixing Dye and Bleach Chemical – the bleach changed the green to blue 13.Cutting Grass Physical– the grass is still grass just smaller 14.Fireworks Exploding 14.Food Spoiling

17. 11.Making Putty Chemical - new substance formed out of glue and borax 12. Mixing Dye and Bleach Chemical – the bleach changed the green to blue 13.Cutting Grass Physical – the grass is still grass just smaller 14.Fireworks Exploding Chemical – gas formation, temp change, light/glow 15. Food Spoiling

18. 11.Making Putty Chemical - new substance formed out of glue and borax 12. Mixing Dye and Bleach Chemical – the bleach changed the green to blue 13.Cutting Grass Physical – the grass is still grass just smaller 14.Fireworks Exploding Chemical – gas formation, temp change, light/glow 15. Food Spoiling – chemical, depending on food, can have color change, taste and smell change, gas formation, precipitate (milk)

19. What are the rules for writing chemical symbols, which help you to identify whether a chemical formula is an element or compound? 1.First letter is a capital letter 2.Second letter (if there is one) is lower case 3.No cursive --- always print! To count the elements, remember every capital letter represents an element ….. Just count the capital letters!

20. Subscript ---- are the small numbers underneath. Coefficient --- the large number in front How many atoms in H2O? How many elements?

21. Subscript ---- are the small numbers underneath. Coefficient --- the large number in front How many atoms in H2O? How many elements? Answer: There are two elements and three atoms …. 2 Hydrogen and 1 Oxygen

22. A Physical Change does not create a new substance; the same substance or substances still exist. Changes in states of matter from gas to liquid to solid are physical changes. Clue words are cutting, smashing, breaking, melting, freezing, boiling.

23. During a chemical change, new substances are created which have completely different properties than the originals. Clue words --- burning, bubbling, fizzing, change of color.

24. List the signs of a chemical change --- explain fully!

25. 1.Gas formation --- new substance fizzes and bubbles.

26. List the signs of a chemical change --- explain fully! 1.Gas formation --- new substance fizzes and bubbles. 2.Solid formation (precipitate) --- a new substance (silly putty)

27. List the signs of a chemical change --- explain fully! 1.Gas formation --- new substance fizzes and bubbles. 2.Solid formation (precipitate) --- a new substance (silly putty) 3.Temperature change ---- not heating or cooling, but a spontaneous change with no outside source

28. List the signs of a chemical change --- explain fully! 1.Gas formation --- new substance fizzes and bubbles. 2.Solid formation (precipitate) --- a new substance (silly putty) 3.Temperature change ---- not heating or cooling, but a spontaneous change with no outside source 4.Color change --- new substance forms in a different color (anything that is burned produces a color change)

29. List the signs of a chemical change --- explain fully! 1.Gas formation --- new substance fizzes and bubbles. 2.Solid formation (precipitate) --- a new substance (silly putty) 3.Temperature change ---- not heating or cooling, but a spontaneous change with no outside source 4.Color change --- new substance forms in a different color (anything that is burned produces a color change) 5.Change in taste/smell --- example would be rotting food

30. List the signs of a chemical change --- explain fully! 1.Gas formation --- new substance fizzes and bubbles. 2.Solid formation (precipitate) --- a new substance (silly putty) 3.Temperature change ---- not heating or cooling, but a spontaneous change with no outside source 4.Color change --- new substance forms in a different color (anything that is burned produces a color change) 5.Change in taste/smell --- example would be rotting food 6.Glow/light ---- examples are fireworks and glow sticks