Download Chapter+4+Ques Honorst

Name_______________________________ Date_______________________ Period____________
Chapter 4 Atoms Quest ?’s
Directions: Using your packet/textbook, complete the following “quest”
questions!
Chp 4-1
1. Who was Democritus?
2. What does the word “atomos” (atom) mean?
3. What was Democritus’ contribution to the Atomic Theory?
4. Who was John Dalton?
5. What was Dalton’s contribution to the Atomic Theory?
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What is a cathode and an anode?
What did Thomson’s experiment suggest about cathode rays?
What are electrons?
What was JJ Thomson’s contribution to the Atomic Theory?
10. Did Rutherford’s Gold Foil Experiment go as planned?
11. What did Rutherford experiment find about the atom?
12. What is a nucleus?
13. Describe or draw what the new model (Rutherford’s model) looks like:
14. What was Rutherford’s contribution to the Atomic Theory?
Chp 4-2
1. What are the three subatomic particles?
2. What is a proton? Charge? Location?
3. What is a neutron? Charge? Location?
4. What is an electron? Charge? Location?
5. How does the mass of an electron compare to protons and neutrons?
6. All atoms of the same element have what in common?
7. Why are atoms neutral?
8. What is an ion?
9. What is electric force, aka strong force?
10. What is an atomic number?
11. What two things does the atomic number tell you about an atom?
12. What is the mass number?
13. What is an isotope?
14. How do you show an atom’s atomic and mass numbers?
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Name_______________________________ Date_______________________ Period____________
15. What is the unified atomic mass unit?
16. What is the average atomic mass? What type of number is it?
17. What is a mole?
18. How many particles are in a mole of a substance?
19. What is Avogadro’s number?
20. What is molar mass?
21. What is the relationship between average atomic mass and molar mass?
22. How do you change “grams” to “mol”?
23. How do you change “mol” to “grams”?
24. How do you find the molar mass of a compound?
Chp 4-3
1. Name two thing scientists now know today about electrons:
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What is an energy level?
Who is Neils Bohr?
What happens to electrons when they gain or lose energy?
What three things are NOT known about electrons?
6. What is an orbital?
7. How many electrons can energy level 1 hold? How about 2? Or 3? Or 4?
8. In what order do electrons fill the energy levels
9. What are valence electrons?
10. What do valence electrons determine?
11. What are subshells? How are subshells represented?
12. How many electrons can each orbital hold?
13. If an atom has 4 orbitals, how many total electrons must it have? What if it has 16
orbitals?
14. What makes an electron “jump” from one energy level to another?
15. What is ground state?
16. What is an excited state?
17. What is a photon?
18. What happens when electrons gain energy? Lose energy?
19. What is the energy of a photon related to?
20. How do we “see” photon energy?
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