1. Evidence of Chemical Change
TEKS 6.5D identify the formation of a new substance by using the evidence of a possible chemical change such as production of a gas, change in temperature, production of a precipitate, or color change.
TEKS 8.5E investigate how evidence of chemical reactions indicate that new substances with different properties are formed.

2. Slide 2
Precipitate
Color Change
Solid

3. Slide 3
Precipitate
Color Change

4. Slide 4
Heat and Light
Color Change
Gas Produced
Precipitate

5. acid rain on a statue Slide 5 Gas Produced
Gas Produced

6. digesting a hamburger Slide 6 Precipitate Color Change Gas Production
Temp Change

7. photosynthesis
Slide 7
Gas Produced
Color Change
Precipitate

8. a nail rusting
Slide 8
Precipitate
Color Change

9. Slide 9 Gas Produced Heat and Light Color Change Precipitate

10. Slide 10
Gas Produced

11. Slide 11
Heat and Light
Gas Produced
Color Change

12. Slide 12 Precipitate Temp Change
Precipitate
Temp Change

13. Slide 13
Heat and Light
Gas Produced
Color Change
Precipitate

14. tarnish on pennies
Slide 14
Precipitate
Color Change

15. Slide 15
Light
Color Change
New Substance that’s a liquid

16. Slide 16
Heat and Light
Gas Produced
Color Change
Precipitate