Chemistry Crossword - Jhuan 9B

3. a particle with a negative charge
4. "The Father of Modern Chemistry"
8. extremely reactive non-metals
9. a very reactive metal, especially in air and water
10. a particle with a positive charge
12. compounds that consist of ions (a group of atoms that have become electrically charged)
14. _______ ____ model, created by John Dalton
15. a particle with a neutral charge
16. is a chemical reaction that takes place in the cells in your body
18. releases heat (example: fire)
19. one of the three factors of the fire triangle
20. reacts to air and water: less reactive than alkaline metals
21. absorbs heat (example: ice pack)
23. have mixed properties of both metals and non-metals
24. a new substance produced in a chemical reaction
25. created the raisin bun model, discovered subatomic particles called electrons

1. the horizontal rows in the periodic table of elements
2. often a liquid or gas at room temperature (can be solids sometimes, aren't malleable, do not conduct electricity, and usually has no lustre
5. takes place when two or more substances combine to form new ones
6. the sum two non-metals combining, forming a pure substance called a _________.
7. the vertical columns in the periodic table of elements
11. a substance that reacts with another substance in a chemical reaction to create a new substance with different products or properties
13. a very stable and unreactive gas
17. solids at room temperature, often malleable, often has lustre, and conducts electricity
22. is a fast chemical reaction that occurs whens oxygen reacts with a substance to form a new substance; gives off energy