Across
- 2. 2 or more molecules or compounds
- 4. the chemicals made by the equation
- 8. particles of energy that comes out of the nucleus of an atom
- 10. positive particles in an atom found in the nucleus
- 12. a reaction with oxygen (burning)
- 14. table an arrangement of all known elements in order of their size and structure
- 15. of mass mass is always the same at the start and end of a reaction
- 17. Change new chemical formed, not easily reversed
- 20. 2 or more different atoms joined together
- 21. Number number of protons plus neutrons in an atom
- 22. smallest particle of matter that contains equal number of positive and…
- 23. two or more atoms joined together
- 24. when two smaller chemicals join in a reaction
Down
- 1. of reaction how fast a reaction happens
- 3. the chemicals used at the start of a reaction
- 5. neutral particles in an atom found in the nucleus
- 6. the solid produced when two liquids react
- 7. equation shows what chemicals are at the start and the end of a reaction
- 8. new chemicals are made
- 9. when a chemical breaks apart into 2 or more chemicals in a reaction
- 11. smaller negative particles orbiting the nucleus
- 13. Property change in appearance, easily visible
- 16. when chemicals swap partners in a reaction
- 18. pure substances containing only one type of atom
- 19. number number of protons in an atom