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Alhussan Chemistry — Stage 8

Chapter 7: Inside Atoms

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Chapter 8: Pure Substances and Solutions

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Chapter 9: Chemical Reactions 2

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Chemistry 7.6 Chapter 7 Review: Inside Atoms — Quiz

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  • Questions count: 50
  • Passing grade: B+
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1.
An atom with 13 protons loses 3 electrons. Size of its positive charge?
3
10
−3
13
2.
How many electrons does Na⁺ have?
23
11
10
12
3.
Which term matches this definition? “Number of protons; also called atomic number.”
Proton number
Cathode ray
Geiger and Marsden
Opposite charges
4.
Which term matches this definition? “Force between charged particles.”
Electrostatic force
Sub-atomic particle
Opposite charges
Electron shell
5.
Neutrons against protons. Calculate the percentage change in "Neutrons" from 2 to 26.
Dr Dabour Hub Academy - figure 1
93%
1500%
1400%
−1400%
6.
Neutrons against protons. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 2
A
B
C
D
7.
Which is the correct definition of “Electrostatic force”?
Force between charged particles.
Negative particle, charge −1, tiny mass, in shells.
Two positive or two negative charges; they repel.
Shell furthest from the nucleus.
8.
Proton number identifies the ____.
isotope
charge
element
mass
9.
Like charges ____.
attract
vanish
repel
cancel
10.
True or false? Isotopes have different atomic numbers.
True
False
11.
Sodium (11) has electron arrangement ____.
2,8,1
2,1,8
2,9
8,2,1
12.
An atom with 12 protons loses 2 electrons. Size of its positive charge?
12
−2
10
2
13.
Alpha particles in Rutherford's experiment (per 10 000). What is the total of all the values?
Dr Dabour Hub Academy - figure 3
10,000
8999
9900
11,001
14.
Alpha particles in Rutherford's experiment (per 10 000). Which has the smallest value?
Dr Dabour Hub Academy - figure 4
Straight through
Large deflection
Small deflection
Bounced back
15.
Dalton said atoms were ____.
liquid
indivisible
charged
hollow
16.
True or false? Rutherford discovered the electron.
True
False
17.
Neutrons against protons. At what value of "Protons" is "Neutrons" smallest?
Dr Dabour Hub Academy - figure 5
8
2
20
26
18.
Relative mass of sub-atomic particles. What is the value for Neutron?
Dr Dabour Hub Academy - figure 6
0.0005
1.0000
4.5000
4.0000
19.
Nucleon number 35, proton number 13. Neutrons?
22
48
13
35
20.
True or false? Mass number identifies the element.
True
False
21.
True or false? Electrons are in the nucleus.
True
False
22.
Which statement is NOT correct?
Most alpha particles went straight through.
Neutrons are positive.
Rutherford discovered the nucleus.
Outer electrons decide chemical properties.
23.
Which term matches this definition? “A particle smaller than an atom.”
Cathode ray
Deflection
Sub-atomic particle
Indivisible
24.
2 of 10000 alpha particles bounced back. Percentage?
99.980%
0.020%
0.200%
5000.000%
25.
In the diagram, which atom has a full first shell and 4 outer electrons?
Dr Dabour Hub Academy - figure 7
Atom B
Atom C
Atom A
None
26.
True or false? Neutrons = nucleon number − proton number.
True
False
27.
In the diagram, what is the electron arrangement of Atom C?
Dr Dabour Hub Academy - figure 8
8,2,1
2,8,1
2,4
2,1
28.
Which term matches this definition? “Rutherford's model with a small positive nucleus.”
Prediction
Electron
Like charges
Nuclear model
29.
Neutrons = nucleon number − ____.
proton number
charge
shells
electrons
30.
A neutral atom has equal protons and ____.
shells
nuclei
neutrons
electrons
31.
Nucleon number 27, proton number 13. Neutrons?
40
14
13
27
32.
Which statement is NOT correct?
Sodium (11) has electron arrangement 2,8,1.
Isotopes differ in numbers of neutrons.
Thomson's model is the plum pudding model.
The first shell holds 8.
33.
Chadwick discovered the ____.
electron
nucleus
proton
neutron
34.
Electrons in each shell of sodium. What is the value for 1st?
Dr Dabour Hub Academy - figure 9
2
9
1
8
35.
Which term matches this definition? “Thomson's model: electrons in a positive sphere.”
Attraction
Relative mass
Gold foil
Plum pudding model
36.
Nucleon number 40, proton number 20. Neutrons?
40
20
60
200
37.
Protons have charge ____ and mass 1.
0
+1
−1
+2
38.
Neutrons have charge ____ and mass 1.
+2
−1
+1
0
39.
Relative mass of sub-atomic particles. About how many times bigger is Proton than Electron?
Dr Dabour Hub Academy - figure 10
1000.0
2000.0
3000.0
4000.0
40.
Which diagram shows the electron arrangement of sodium (11 electrons)?
Dr Dabour Hub Academy - figure 11
C (8,3)
A (2,8,1)
B (2,9)
None
41.
True or false? Outer electrons decide chemical properties.
True
False
42.
The first shell holds ____ electrons.
18
8
2
1
43.
True or false? Chadwick discovered the neutron.
True
False
44.
True or false? Protons have charge +1 and mass 1.
True
False
45.
Which is the correct definition of “Sub-atomic particle”?
A particle smaller than an atom.
Change direction.
Positive particle in the nucleus, charge +1, mass 1.
Isotope with 6 protons and 8 neutrons.
46.
1 of 8000 alpha particles bounced back. Percentage?
99.987%
0.125%
8000.000%
0.013%
47.
True or false? Electrons are heavy.
True
False
48.
True or false? Neutrons are positive.
True
False
49.
Which term matches this definition? “Energy level where electrons orbit the nucleus.”
Electron shell
Scattering
Carbon-14
Hittorf
50.
Which statement is NOT correct?
Proton number identifies the element.
Most alpha particles bounced back.
Thomson discovered the electron.
Inner electrons are held most strongly.
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Part of Chapter 7: Inside Atoms — see every lesson and quiz in this unit.
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