Chemistry Lab

2. cloudy mixture in which tiny particles of one substance are held within another cannot be separated
3. Group 17
6. liquid at room temperature is also a planets name
7. Number of protons in an elements nucleus
9. Group 2
13. Period 4, Group 17
14. columns in the periodic table
15. positively charged particle in the nucleus of a atom
16. when the charges are balanced in a compound
20. used only sinmplestones and bones during this time to make tools and other things they needed
22. how heavy one element of an atom is
23. are a shiny solid

1. rows in the periodic table
2. non reversible reactions that creates a precipitate and or odour
4. two non-metals being combined in a compound
5. homogeneous mixture
6. heterogeneous mixture
8. change in appearance or state of the substance and is reversible
10. pure substance that cannot be broken down into other substances and is on the periodic table
11. Group 1
12. cloudy mixture in which tiny particles are within a substance and can be separated
17. Group 18
18. have both metallic and non metallic properties
19. Neutral particle in the nucleus of a atom
21. can be a solid or a gas