Across
- 5. Jelly-like substance where chemical reactions happen.
- 8. State of matter with fixed volume but no fixed shape.
- 10. The joining of a sperm cell and an egg cell.
- 11. The force that pulls objects towards Earth.
- 12. Contains chlorophyll for photosynthesis.
- 16. Controls the activities of a cell.
- 18. The basic unit of life.
- 19. Two or more atoms bonded together.
- 20. The female reproductive cell.
- 22. The early stage of development after fertilisation.
- 24. A substance made from two or more elements chemically joined.
- 26. Controls what enters and leaves the cell.
- 28. The amount of matter in an object.
- 29. State of matter with fixed shape and volume.
Down
- 1. A push or a pull.
- 2. Releases energy through respiration.
- 3. State of matter with no fixed shape or volume.
- 4. Movement of particles from high to low concentration.
- 6. Two or more substances that are not chemically joined.
- 7. The force caused by gravity acting on a mass.
- 9. Tiny piece of matter.
- 10. A force that opposes motion.
- 13. Distance travelled every second.
- 14. A space in plant cells containing cell sap.
- 15. The male reproductive cell.
- 17. Speed in a given direction.
- 20. A substance made from only one type of atom.
- 21. The stage when a child's body matures into an adult body.
- 23. The stage of development after the embryo.
- 25. Amount of mass in a given volume.
- 27. The smallest particle of an element.