Across
- 4. a complex entity made of many parts
- 5. relating to the simplest units of an element or compound
- 6. an electrical force linking atoms
- 8. a whole formed by a union of two or more elements or parts
- 12. an arrangement of points in a regular periodic pattern
- 15. occurring or formed with the release of heat
- 16. a unit of electrical energy
- 17. containing or involving electrically charged particles.
- 18. a connection that fastens things together
- 19. an arrangement of parts or elements
- 20. a stable particle with positive charge
- 21. forceful exertion
- 23. occurring or formed with absorption of heat
- 25. a relation between two opposite attributes
Down
- 1. the simplest structural unit of an element or compound
- 2. the smallest component of an element
- 3. the force by which one object attracts another
- 7. a particle that is electrically charged positive or negative
- 9. the molecular weight of a substance in grams
- 10. the process of ionizing
- 11. arrangement of chemical elements according to atomic number
- 13. participating in processes changing substances into others
- 14. the act of fastening firmly together
- 22. an elementary particle with negative charge
- 24. of or relating to a molecule made up of two atoms