1. Electrons are Waves and Particles
What’s the Matter?
Electrons are Waves and Particles
Atoms
Isotopes
Quantum Theory
100
200
300
400
500

2. Answer What’s the matter - 100
All of matter is composed of ____, the basic unit of all chemistry.
Answer

3. What’s the matter - 100
ATOMS
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4. Answer What’s the matter - 200
A(n) _______ is to chemistry as a ______is to biology.
Answer

5. What’s the matter - 200
ATOM…CELL
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6. Answer What’s the matter - 300
The comparison of the number of atoms in a copper coin the size of a penny with the number of people on Earth is made to illustrate which of the following?
That atoms are indivisible
That atoms are very small
That atoms are very large
That in a copper penny, there is one atom for every person on Earth
Answer

7. What’s the matter - 300
THAT ATOMS ARE VERY SMALL
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8. Answer What’s the matter - 400
The nucleus of an atom has a ___ charge due to the _____ (subatomic particle).
Answer

9. What’s the matter - 400
POSITIVE…PROTON
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10. Answer What’s the matter - 500
____ are negatively charged subatomic particles and are about 1/2000 the mass of a proton or neutron.
Answer

11. What’s the matter - 500
ELECTRONS
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12. Electrons are waves and particles - 100
What is the lowest energy state of an atom called?
Answer

13. Electrons are waves and particles - 100
GROUND STATE
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14. Electrons are waves and particles - 200
Label each of the pieces of the wave: A B C D
Answer

15. Electrons are waves and particles - 200
A – WAVELENGTH
B – CREST
C – AMPLITUDE
D - TROUGH
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16. Electrons are waves and particles - 300
As the frequency of a wave increases, the wavelength (increases/decreases) and energy (increases/decreases)
Answer

17. Electrons are waves and particles - 300
DECREASES…INCREASES
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18. Electrons are waves and particles - 400
A ____ is the smallest amount of energy that can be gained or lost by an atom.
Answer

19. Electrons are waves and particles - 400
QUANTUM
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20. Electrons are waves and particles - 500
The Heisenberg Uncertainty Principle states:
Answer

21. Electrons are waves and particles - 500
IT IS IMPOSSIBLE TO KNOWN PRECISELY BOTH THE POSITION AND THE MOMENTUM OF AN ELECTRON
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22. ATOMS - 100
How many neutrons are in 16O?
Answer

23. ATOMS - 100 8
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24. ATOMS - 200
How many protons, electrons, and neutrons does an atom with atomic number 50 and mass number 125 contain?
Answer

25. ATOMS
50 PROTONS
50 ELECTRONS
75 NEUTRONS
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26. As Answer ATOMS - 300 How many neutrons are in the Arsenic atom? 33
Answer

27. As Back Home ATOMS - 300 75 – 33 = 42 neutrons 33 Atomic number
Mass number
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28. ATOMS - 400
What was concluded about the structure of the atomic nucleus as the result of the gold foil experiment?
A positively charged nucleus is surrounded by positively charged particles.
A positively charged nucleus is surrounded by mostly empty space.
A negatively charged nucleus is surrounded by positively charged particles.
A negatively charged nucleus is surrounded by mostly empty space.
Answer

29. ATOMS - 400
A POSITIVELY CHARGED NUCLEUS IS SURROUNDED BY MOSTLY EMPTY SPACE.
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30. ATOMS - 500
What does the atomic mass of an element on the periodic table depend upon?
Answer

31. Back Home ATOMS - 500 MASS OF THE ISOTOPES
RELATIVE/PERCENT ABUNDANCE OF THE ISOTOPES
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32. ISOTOPES - 100
Isotopes of the same element have different ______.
Answer

33. ISOTOPES
NUMBER OF NEUTRONS or MASS NUMBERS
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34. ISOTOPES
How big are electrons compared to protons and neutrons?
Answer

35. ISOTOPES
Electrons are 1/1840 the size of both protons and neutrons.
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36. ISOTOPES
What is the difference between these isotopes?
Answer

37. Back Home ISOTOPES - 300 The mass numbers are different.
The first isotope has 3 neutrons, the second isotope has 4 neutrons, and the third isotope has 5 neutrons.
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38. ISOTOPES
Calculate the atomic mass of chlorine using the isotope data below.
Answer

39. ISOTOPES
(34.97 g)(76/100) + (36.97 g)(24/100) = g g = g
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40. ISOTOPES
What is the difference between the atomic mass and mass number of an element?
Answer

41. ISOTOPES
THE ATOMIC MASS IS CALCULATED WITH THE MASS OF EACH ISOTOPE AND THE PERCENT ABUNDANCE OF EACH ISOTOPE.
THE MASS NUMBER IS THE NUMBER OF PROTONS AND NEUTRONS IN AN ATOM. IT CAN BE ROUNDED BY ATOMIC MASS.
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42. Answer QUANTUM THEORY - 100
When an electron moves from a lower to a higher energy level, the electron (absorbs/gives off) a quantum of energy.
Answer

43. QUANTUM THEORY - 100
ABSORBS
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44. Answer QUANTUM THEORY - 200
In the periodic table, the principal quantum number corresponds to the ___.
Transition metals
Group number
Period number
Ground state
Answer

45. QUANTUM THEORY - 200
C. PERIOD NUMBER
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46. Answer QUANTUM THEORY - 300
The _____ quantum number indicates the relative size and energy level, while the ____ quantum number (or sublevels) relates to the shapes of the orbitals.
Answer

47. QUANTUM THEORY - 300
PRINCIPAL…ANGULAR
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48. Answer QUANTUM THEORY - 400
What is the maximum number of electrons in the second principal energy level (n = 2)?
Answer

49. QUANTUM THEORY - 400 8
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50. Answer QUANTUM THEORY - 500
The s sublevel contains ___ orbitals (and 2 electrons) and the p sublevel contains ___ orbitals (and 6 electrons).
Answer

51. QUANTUM THEORY - 500
1…3
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