Across
- 2. ___ supports burning and is the by-product of photosynthesis..
- 5. ___ removes and dissolves chlorophyll in iodine test.
- 6. ___ is the product of photosynthesis.
- 8. ___splint relights in oxygen.
- 11. Air contains 78% of ______.
- 12. Earth is surrounded by a layer of air called the ______.
Down
- 1. ___ indicator turns from red to yellow when the percentage of carbon dioxide is higher than 0.04%.
- 3. ___ is a green pigment which absorbs sunlight.
- 4. ___ is a process in which plants make their own food.
- 7. Boiling destroys the cell ___ for iodine test.
- 9. ___ is stored in green leaf cells for later use and can be tested by iodine solution.
- 10. ___ water is used for testing the presence of carbon dioxide.