Chapter 4 Review Worksheet – Honors Name: _____________________________________ Period: ____________ 1. List the major accomplishments of the following people in the history of an atom. Dalton – Democritus – Thomson – Rutherford – 2. List the four major accomplishments in Dalton’s atomic theory. 3. Why is Avogadro’s number useful? 4. Name the three subatomic particles. List their symbols and charges. 5. What is the location in the atom of protons, neutrons, and electrons? - 6. Given the following element, label the atomic number, atomic mass, and symbol. Tell how many protons, neutrons, and electrons the element has. 28 Nickel 58.71 7. What is an isotope? 8. What is the amount of copper, which has an average atomic mass of 63.55, present in 200 g of copper? 9. What is the difference between an electron in an excited state versus the ground state? 10. Fill in the following chart below. Element Strontium Potassium Zinc Bromine Neon Symbol Atomic Number Mass Number # of Protons # of # of Electrons Neutrons