Across
- 2. how fast a reaction is
- 3. a regular arrangement of particles
- 5. does not react
- 9. liquid changes to solid
- 11. an ion with a negative charge
- 15. solute dissolve in it
- 17. a starting chemical for a reaction
- 18. an ion with a positive charge
- 19. a compound formed between oxygen and other element
- 21. made up of molecules
- 22. Burns easily
- 23. harmful to health
- 25. another name for a negative ion
- 27. does not react easily
Down
- 1. energy another term for heat
- 4. reacts with substances it comes into contact with
- 6. the center part of the atom, made up of the atom made up of the protons and neutrons
- 7. a gradual change
- 8. another name for a positive ion
- 10. gives out heat energy
- 12. breaks easily when struck
- 13. metal group 1 of the periodic table
- 14. not harmful to health
- 16. a poor heat or electricity conductor
- 20. reusing resources
- 21. solid changes to liquid
- 24. will dissolve in solvent
- 26. has no charge
- 28. a soluble base