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Senior High School: 11th and 12th Grade
Physics
Radioactivity - Atomic Structure
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Q.1
What is the relative charge of a neutron?
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+1
0%
-1
0%
0
0%
-10
Q.2
What is the relative mass of a proton?
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+1
0%
-1
0%
0
0%
+10
Q.3
Atoms of an element always have the same number of protons but can have a different number of what?
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Atomic numbers
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Electron masses
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Proton masses
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Neutrons
Q.4
A neutral atom has five protons. How many electrons does it contain if it is not an ion?
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4
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5
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10
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1
Q.5
What is an atom called which has lost an electron?
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Ion
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Baryon
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Quark
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Oxygen
Q.6
What is the relative mass of an electron?
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+1
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-1
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0
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+10
Q.7
What is the relative charge of a proton?
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+1
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-1
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0
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+10
Q.8
What is an atom?
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An atom is made up of an electron
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An atom is a particle consisting of a small central nucleus containing protons and neutrons surrounded by electrons
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An atom is made up of molecules such as H2O
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An atom is a particle consisting of a small central nucleus containing neutrons and electrons surrounded by protons
Q.9
What does an atom's atomic number represent?
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The number of particles within an atom in its nucleus
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The number of protons in an atom in its nucleus
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The number of neutrons in an atom in its nucleus
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The number of electrons in an atom in its nucleus
Q.10
If an atom has 3 electrons, how many protons does it contain?
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1
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4
0 h : 0 m : 1 s
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