Evidence of Chemical Change

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Presentation transcript:

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.

Slide 2 Precipitate Color Change Solid

Slide 3 Precipitate Color Change

Slide 4 Heat and Light Color Change Gas Produced Precipitate

acid rain on a statue Slide 5 Gas Produced http://www.youtube.com/watch?v=MqHw1hMEkAQ Gas Produced

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

photosynthesis Slide 7 Gas Produced Color Change Precipitate

a nail rusting Slide 8 Precipitate Color Change

Slide 9 Gas Produced Heat and Light Color Change Precipitate http://www.youtube.com/watch?v=xn_jgbFPyBQ

Slide 10 Gas Produced

Slide 11 Heat and Light Gas Produced Color Change

Slide 12 Precipitate Temp Change http://www.youtube.com/watch?v=9qJbSz-eCq0 Precipitate Temp Change

Slide 13 Heat and Light Gas Produced Color Change Precipitate

tarnish on pennies Slide 14 Precipitate Color Change

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

Slide 16 Heat and Light Gas Produced Color Change Precipitate