Chemistry Review

1. the study of atoms and their interactions with other atoms
4. combining a light nuclei to form a heavier more stable nucleus
5. vertical columns based on number of electrons
7. one type of atom with unique properties
9. the smallest unit of an element that maintains the properties of that element
12. electrons in the atoms outermost orbitals
14. a region in a shells energy level where you can find an electron
15. ability to attract electrons
16. a physical property of matter that measures how closely packed the particles are in a material
17. splitting a heavy nucleus into two nuclei with smaller mass numbers
19. has the same atomic number but different mass numbers
20. bond that forms only between nonmetals
21. subatomic particle with a positive charge

2. isotope of an element that is unstable and undergoes radioactive decay
3. 7 horizontal rows with similar properties
6. the spontaneous breakdown of an atom's nucleus by the emission of particles or radiation
8. poor conductors no luster any shape of matter
10. hard dense conductors with a shiny luster ex: iron
11. bond that forms between metals and nonmetals and generates two oppositely charged atoms through the sharing of electrons
13. subatomic particle with a negative charge
18. subatomic particle with a neutral charge