Download Chapter 2 Study Guide

Name __________________________________________
Chapter 2 Study Guide
1. The first subatomic particle discovered was ___________________________.
2. The only subatomic particle that does not carry an electric charge is the __________.
3. The atomic number of an element whose atoms have 12 protons and 11 neutrons is _____.
4. The mass number of an element whose atoms have 15 protons and 17 neutrons is _________.
5. One isotope of carbon has 6 protons and 6 neutrons. The number of protons and neutrons of a
second isotope of carbon would be _______________________.
6. ______________ first proposed that matter is made up of atoms, the smallest particles of matter.
7. If 5.0 g of water contain 1.0 g of H, what mass of O is contained in 20.0 g of water? __________
8. J.J. Thompson discovered the electron using the _________________________________.
9. If a scientist studies a beam of particles, and those particles are attracted to a negatively charges
plate, the particles are most likely _________________.
10. Carbon-12 and carbon-14 are examples of ___________________.
11. The discovery of isotopes lead to the discovery of ______________.
12. The ______________________ is where the electron is most likely to be found.
13. How many energy levels are needed to contain the 26 electrons of an iron atom? __________
14. The atomic number of calcium is 20. How many valence electrons does an atom of chlorine
have? ________
15. In an electron dot diagram, the dots represent _____________ in the atom.
16. Neutral particle found within an atom is ______________________
17. Sum of protons & neutrons in the nucleus is called the _________________ of that atom.
18. An atom’s electrons are found in the space around the nucleus known as the ________________
19. A(n) ____________________________ is found in the outermost energy level.
20. The _____________________________ is the idea that matter is made up of fundamental
particles called atoms.
21. Write the electron configurations for carbon. ______________________________________
22. Write the electron configuration for tin. __________________________________________
23. 1s22s22p63s23p64s23d9 is the electron configuration for? __________________
24. 1s22s22p63s23p64s1 is the electron configuration for? _____________________________
25. Write the shorthand notation for Xe _______________________________________________
26. Write the shorthand notation for Fr ________________________________________________
27. List the orbitals present in each of the first 4 energy levels