Download Unit 2 Intro Worksheet - Coral Gables Senior High

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Transcript
Unit 2 Introduction Worksheet
Unit 2: Ch. 5 & 6
Short Answer
1. What is the explanation for the discrete lines in atomic emission spectra?
2. Why are you unable to observe the wavelike motion of a soccer ball as it is kicked toward a goal?
3. What is the quantum mechanical model?
4. Explain what is meant by the Heisenberg uncertainty principle.
5. Explain the three principles that govern the electron configuration in an atom.
Matching
Match each item with the correct statement below.
a. atomic orbital
d. ground state
b. aufbau principle
e. Pauli exclusion principle
c. electron configuration f. Heisenberg uncertainty principle
____
1. region of high probability of finding an electron
____
2. states the impossibility of knowing both velocity and position of a moving particle at the same time
____
3. lowest energy level
____
4. tendency of electrons to enter orbitals of lowest energy first
____
5. arrangement of electrons around atomic nucleus
____
6. each orbital has at most two electrons
a. atomic emission spectrum
d. photon
b. frequency
e. quantum
c. wavelength
f. spectrum
____ 7. discrete bundle of electromagnetic energy
____ 8. energy needed to move an electron from one energy level to another
____ 9. number of wave cycles passing a point per unit of time
____ 10. distance between wave crests
____ 11. separation of light into different wavelengths
____ 12. frequencies of light emitted by an element