Matter and Chemistry

4. The number of protons in an atom
5. To have the same properties at every point
10. A table of elements put in order based on atomic number
11. The ability to dissolve in water
13. A state of matter that is less rigid than a solid but, more rigid than a gas
16. A subatomic particle that has a positive charge
18. A subatomic particle that has a negative charge
20. The temperature at a liquid will boil
21. The mass of an atom
22. A chemical substance that can not be broken down into other substances

1. A thing that is composed of two or more different elements
2. A state of matter that has no fixed shape
3. Have the same number of shells, levels, and orbitals.
6. A small dense region in a cell that holds protons and neutrons
7. The temperature at a solid will melt
8. A substance made by putting other substances together
9. A state of matter that is stable
12. To have different properties at different points
14. Any material, no matter what it is made of, can exist in one of three forms: solid, liquid or gas.
15. A subatomic particle that has a neutral( or zero) charge
17. The basic unit of a chemical event
19. Have the same number of Valence electrons