Across
- 5. Solids at room temperature, often malleable, often has lustre, and conducts electricity
- 9. _______ ____ model, created by John Dalton
- 11. a particle with a positive charge
- 12. is a chemical reaction that takes place in the cells in your body
- 15. a substance that reacts with another substance in a chemical reaction to create a new substance with different products or properties
- 16. a new substance produced in a chemical reaction
- 17. releases heat (example: fire)
- 20. a particle with a negative charge
- 21. compounds that consist of ions (a group of atoms that have become electrically charged)
- 22. "The Father of Modern Chemistry"
- 23. a very stable and unreactive gas
Down
- 1. takes place when two or more substances combine to form new ones
- 2. the horizontal rows in the periodic table of elements
- 3. have mixed properties of both metals and non-metals
- 4. reacts to air and water: less reactive than alkaline metals
- 6. absorbs heat (example: ice pack)
- 7. the sum two non-metals combining, forming a pure substance called a _________.
- 8. a very reactive metal, especially in air and water
- 10. is a fast chemical reaction that occurs whens oxygen reacts with a substance to form a new substance; gives off energy
- 13. often a liquid or gas at room temperature (can be solids sometimes, aren't malleable, do not conduct electricity, and usually has no lustre
- 14. a particle with a neutral charge
- 18. extremely reactive non-metals
- 19. one of the three factors of the fire triangle
- 24. the vertical columns in the periodic table of elements
