1. W HAT IS IN A BOX ? S ECRETS OF THE P ERIODIC T ABLE R EVEALED ( LEVEL 1- 7)

2. E ACH BOX ON THE P ERIODIC T ABLE GIVES PARTICULAR INFORMATION ABOUT THE ATOMS OF THE ELEMENT. 1 H Hydrogen 1.008 Top number Atomic number = Protons Electrons The chemical symbol is an abbreviation for the element’s name. The name of the element is below the symbol. The number below the name indicates the atomic mass of all the isotopes in the element. To find the number of neutrons, round off the atomic mass. Then, subtract the atomic number.

3. A NSWER IN YOUR NOTEBOOK ! 1. How do you find the atomic number? The atomic number is the number at the top of the box. 2. How do you find the atomic mass of the element? The atomic mass is the number at the bottom of the box. We usually round the atomic mass to the whole number. 3. How do you find the number of protons in the element? The number of protons is the same as the atomic number. 4. How do you find the number of neutrons in the element? The number of neutrons is the atomic mass (rounded to the nearest whole) minus the atomic number. 5. How do you find the number of electrons in the element? The number of electrons is the same number as the atomic number.

4. L ETS C OLOR !! Alkali Metals Alkaline Metals Transition Metals Metalloids Non-Metals Noble Gasses Lanthanide Series Actinide Series

5. PRACTICE ELEMENT NAME SYMBOLATOMIC # ATOMIC MASS # OF PROTONS # OF NEUTRONS # OF ELECTRONS STATE OF MATTER CHLORINE OXYGEN LITHIUM HYDROGEN NITROGEN POTASSIUM MAGNESIUM CARBON

6. ELEMENT NAME SYMBOLATOMIC #ATOMIC MASS # OF PROTONS # OF NEUTRONS # OF ELECTRONS STATE OF MATTER CHLORINECl1735171817Gas OXYGENO816888Gas LITHIUMLi37343Solid HYDROGENH11101Gas NITROGENN714777Gas POTASSIUMK1939192019Solid MAGNESIUMMg122412 Solid CARBONC612666Gas