University:
Arizona State University
Course:
CHM 101 | Introductory Chemistry
Academic year:

2024
Views:

489

Pages:

4
Author:

Dania Lynch

1. The 3 particles of the atom are: Their respective charges are: a. ________________________ a. ________________________ b. ________________________ b. ________________________ c. ________________________ c. ________________________ Word Bank: atomic number neutrons amount name nucleus atomic mass charge protons atomic mass atomic mass electrons same The number of protons in one atom of an element determines the atom’s _________________, and the number of electrons determines the _________________________ of the element. 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 element. The atomic number gives the “identity” of an element as well as its location on the periodic table. No two different elements will have the ____________________ atomic number. The ______________________ of an element is the average mass of an element’s naturally occurring atom, or isotopes, taking into account the ____________________ of each isotope. The _______________________ of an element is the total number of protons and neutrons in the ___________________ of the atom. The atomic mass 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 ______________________ from the ______________________. 7. Give the symbol of and the number of protons in one atom of: Lithium _____, __________________ Bromine _____, __________________ Iron _____, __________________ Copper _____, __________________ Oxygen _____, __________________ Mercury _____, __________________ Krypton _____, __________________ Helium _____, __________________ 8. Give the symbol of and the number of electrons in a neutral atom of: Uranium _____, __________________ Xenon _____, __________________ Boron _____, __________________ Iron _____, __________________ Chlorine _____, __________________ Magnesium _____, __________________ Iodine _____, __________________ Hydrogen _____, __________________ 9. Give the symbol of and the number of neutrons in one atom of: (Mass numbers are ALWAYS whole numbers...show your calculations) Barium _____, __________________ Calcium _____, __________________ Carbon _____, __________________ Mercury _____, __________________ Fluorine _____, __________________ Magnesium _____, __________________ Bismuth _____, __________________ Hydrogen _____, __________________ 10. Name the element which has the following numbers of particles: 11. If you know ONLY the following information can you ALWAYS determine what the element is? (Yes/No) 12. Fill in the missing items in the table below. NAME SYMBOL Na ATOMIC # ATOMIC MASS # of PROTONS # of Electrons # of Neutron 17 Potassium P Iron 32.1 Silver 19 W 6 40.1 Au 39.9 20