Hi, you've asked an incomplete question. Attached is the full image of the graphic organizer.
Answer:
- <u>chemical reactions</u>
- <u>substances</u>
- <u>properties</u>
- <u>precipitate</u>
- <u>gas</u>
- <u>color</u>
- <u>temperature</u>
- <u>light</u>
Explanation:
After merging the missing words together, we can make this likely conclusion:
First, when chemical reactions (1) occur, they often indicate new substances (2), that is formed with new properties (3).
Next, we also note that some evidence of a chemical reaction occurring includes:
↓<u>formation of:</u>
a precipitate (4), or
gas (5)
↓<u>change in:</u>
color (6)
temperature (7).
↓<u>production of:</u>
light (8) A good example of this occurs when one burns wood by applying heat, there's usually a production of light.