Across
- 1. Tiny filtering units in kidny
- 3. Reaction where a substance breaks into simpler ones
- 9. Reaction in which heat is absorbed
- 11. Bending of light when it passes from one medium to another
- 13. A line perpendicular to the surface of a mirror
- 14. Process by which green plants make food
- 15. Change in color, temperature, or gas release
Down
- 2. Reaction of an acid with a base
- 4. Organelle where respiration occurs
- 5. Mirror that bulges outward
- 6. Point where all rays meet in a concave mirror
- 7. Red pigment that carries oxygen in blood
- 8. Substance that speeds up a reaction
- 10. Device used to see objects behind you on vehicles
- 12. Movement of water through semipermeable membrane