Across
- 3. Tube that carries urine from kidney to bladder
- 4. Reaction involving gain of oxygen or loss of hydrogen
- 6. A chemical equation with equal atoms on both sides
- 8. Band of colors obtained after dispersion of light
- 10. Plant tissue that transports water and minerals
- 13. Related to vision and light phenomena
- 14. Representation of a chemical reaction using symbols
- 15. A piece of glass that refracts light rays
Down
- 1. Reaction where a compound breaks into simpler substances
- 2. Reaction that absorbs heat from surroundings
- 5. A transparent object that disperses light
- 7. Tiny sacs in lungs for gas exchange
- 9. Protein catalyst that speeds up biochemical reactions
- 11. A mirror that converges parallel rays to a point
- 12. Digestive juice secreted by the liver