Atomic Structure Essay

1030 Words5 Pages
Name:____________ Block:____________ Atomic Structure Worksheet 1. The 3 particles of the atom are: protons a. ______________________ b. ______________________ neutrons electrons c. ______________________ Their respective charges are: positive + a. ______________________ neutral 0 b. ______________________ negative c. ______________________ 2. The number of protons in one atom of an element determines the atom’s idenity ______________________ , and the number of electrons determines charge ______________________ of and element. 3. protons The atomic number tells you the number of ______________________ in one atom of an element. It also tells you the number of ______________________ in a neutral atom of that electrons element. The atomic number gives the “identity “ of an element as well as its location on the same Periodic Table. No two different elements will have the ______________________ atomic number. 4. atomic mass The ______________________ of an element is the average mass of an element’s naturally occurring atom, or isotopes, taking into account the ______________________ of each mass isotope. 5. mass number The ______________________ of an element is the total number of protons and neutrons in nucleus the______________________ of the atom. 6. neutrons The mass number is used to calculate the number of ______________________ in one atom of an element. In order to calculate the number of neutrons you must subtract the protons ______________________ mass number from the ______________________ . 7. Give the symbol and number of protons in one atom of: Lithium Iron Oxygen Li, 3 __________________ Fe, 26 __________________ O, 8 __________________ Br, 35 Bromine __________________ Copper Helium Cu, 29 __________________ He, 2 __________________ Hg, 80 Mercury __________________ Kr, 36 Krypton

More about Atomic Structure Essay

Open Document