3. Nucleus Protons + Neutrons Electron Cloud Blurry Area Containing Electrons

14. 1 3 4 456 11 10 987 12 13151617 18 14 5 3 1 2 6 7 2 Alkali Metals Alkaline Earth Metals Transition Metals Boron Group Carbon Group Nitrogen Group Oxygen Group Halogens Noble Gases

15.  Nonmetals (right of zig-zag line)  No luster  Poor conductors  Not malleable or ductile  Many are gases; Bromine is a liquid; some are solids

17. Atomic Number Determines Element = Protons = Electrons Atomic Symbol 1 or 2 Letters 1 st is Capitalized 2 nd is NOT Atomic or Element Name Atomic Mass = Protons + Neutrons

18. # Protons = _____ (Same as Atomic Number) # Electrons = _____ (Same as Atomic Number) # Neutrons = _____ (Rounded Atomic Mass MINUS Atomic Number) # Protons = ____ # Electrons = _____ # Neutrons = _____ 99 153 52 41

19. K

20. Mg

22. Ga

23. C

24. P

25. Te

26. At

27. Kr