chapter 14 multiple format worksheet

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ID: A
Chapter 14 Multi-format Test
Modified True/False
Indicate whether the statement is true or false. If false, change the identified word or phrase to make the statement true.
____
1. Two negative charges will attract one another. _________________________
____
2. The smallest quantity of electric charge that can be found in ordinary matter is represented by the letter c.
_________________________
____
3. The number of protons plus the number of neutrons in the nucleus of an atom is known as the mass number.
_________________________
____
4. The tiny core of an atom containing most of the mass of the atom is the neutron.
_________________________
____
5. The nucleus of an atom that spontaneously breaks up to emits particles or pure energy may be called
radioactive. _________________________
____
6. The strongest force in the universe is gravity. _________________________
____
7. The proton’s mass number is equal and opposite to the electron’s. _________________________
Completion
Complete each statement.
Select the correct term to complete each sentence. There are extra terms in the list.
alpha
gamma
2
ions
strong nuclear
beta
electromagnetic
8
electrons
gravitational
spectroscope
isotopes
18
protons
weak
8. Atoms having the same atomic number but different mass numbers are described as ____________________.
9. The radioactive decay of an atom resulting in the decrease in the atomic number with no change in the atomic
mass is ____________________ decay.
10. Each element emits a characteristic pattern of ____________________ when viewed through a spectroscope.
11. The instrument used to separate the light given off by electrons into different colors is called a
_________________________.
12. The number of electrons that may be held in the third energy level of an atom is ____________________.
1
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Matching
Match each part of the atom with its identity from the list below.
____
____
____
____
____
13.
14.
15.
16.
17.
nucleus
electron
proton
neutron
energy level
For the following element, match the letter with the type of information given.
____ 18. name of element
____ 19. symbol
____ 20. atomic number
Short Answer
21. List the four forces found within atoms and rank them in order of decreasing strength.
22. Where would a particle with a charge of +e be found in an atom?
23.
How many energy levels would be completely filled by an atom of neon (Ne)? How many electrons would be
left over?
24. Of the three sub-atomic particles: electrons, protons and neutrons, which determines most of the properties of
an element?
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25. What is the evidence that electrons in atoms are only allowed to have specific amounts of energy?
Problem
26. The mass number for an isotope of oxygen is 17 and the atomic number is 8. How many neutrons are present
in this isotope of oxygen?
27. The diagram below represents the charge distribution of positive and negative charges in a body.
What is the overall (net) charge on the object as it is pictured?
Essay
28. Describe the difference between an electron and a proton. In your description tell (1) where each is found in
the nucleus (2) the charge, if any, on each and (3) how their masses compare.
29. When a gas is heated, it may give off light. Explain how a scientist might identify the element or elements
from which the gas is made.
Other
30. Using the diagram below as a model, represent the electron energy levels of a fluorine atom, atomic number
9.
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Chapter 14 Multi-format Test
Answer Section
MODIFIED TRUE/FALSE
1. ANS: F, repel
DIF: basic
2. ANS: F, e
REF: section 14.1
DIF: basic
3. ANS: T
4. ANS: F, nucleus
REF: section 14.1
DIF: basic
REF: section 14.1
5. ANS: T
6. ANS: F
strong nuclear force
the strong nuclear force
DIF: basic
7. ANS: F, charge
DIF:
intermediate
DIF: basic
REF: section 14.1
DIF: basic
REF: section 14.1
REF: section 14.1
REF: section 14.1
COMPLETION
8. ANS: isotopes
DIF: basic
9. ANS: alpha
REF: section 14.1
DIF: intermediate REF: section 14.1
10. ANS: spectral lines
DIF: basic
REF: section 14.2
11. ANS: spectroscope
DIF: basic
12. ANS: 8
DIF:
intermediate
REF: section 14.2
REF: section 14.2
MATCHING
13. ANS: C
14. ANS: E
DIF: intermediate
DIF: intermediate
REF: section 14.1
REF: section 14.1
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15. ANS: A
16. ANS: B
17. ANS: D
DIF: intermediate
DIF: intermediate
DIF: intermediate
REF: section 14.1
REF: section 14.1
REF: section 14.2
18. ANS: C
19. ANS: A
20. ANS: B
DIF: basic
DIF: basic
DIF: basic
REF: section 14.1
REF: section 14.1
REF: section 14.1
SHORT ANSWER
21. ANS:
strong nuclear force (strongest)
electromagnetic force
weak force
gravity (weakest)
DIF: basic
22. ANS:
In the nucleus.
REF: section 14.1
DIF: intermediate REF: section 14.1
23. ANS:
The neon atom has two filled energy levels and no electrons left over.
DIF: intermediate
24. ANS:
electrons
REF: section 14.1
DIF: basic
REF: section 14.2
25. ANS:
When viewed through a spectrometer, only specific colors of light are given off by atoms. These specific
colors correspond to specific amounts of energy.
DIF:
advanced
REF: section 14.2
PROBLEM
26. ANS:
The number of neutrons is the difference between the mass number and the atomic number; 9 neutrons
DIF: intermediate
27. ANS:
+10 - 6 = +4
DIF:
intermediate
REF: section 14.1
REF: section 14.1
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ESSAY
28. ANS:
(1) The proton is found in the nucleus, the electron orbits outside the nucleus.
(2) The proton has a positive charge and the electron a negative charge.
(3) The proton is 1835 times more massive than the electron.
DIF: basic
REF: section 14.1
29. ANS:
The light from the gas, when examined with a spectroscope, will produce a bright line spectrum. The
spectrum for each element is unique to that element and allows the scientist to identify the elements in the
gas.
DIF:
intermediate
REF: section 14.2
intermediate
REF: section 14.1
OTHER
30. ANS:
DIF:
3
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Chapter 14 Multi-format Test [Answer Strip]
F
_____
1.
F
_____
2.
T
_____
3.
F
_____
4.
T
_____
5.
F
_____
6.
C
_____
E
_____
A
_____
B
_____
D
_____
13.
14.
15.
16.
17.
F
_____
7.
C 18.
_____
A 19.
_____
B 20.
_____
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ID: A