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Year 11 Exam  >  Year 11 Tests  >  Test: Radioactivity - Year 11 MCQ

Test: Radioactivity - Year 11 MCQ


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10 Questions MCQ Test - Test: Radioactivity

Test: Radioactivity for Year 11 2024 is part of Year 11 preparation. The Test: Radioactivity questions and answers have been prepared according to the Year 11 exam syllabus.The Test: Radioactivity MCQs are made for Year 11 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Radioactivity below.
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Test: Radioactivity - Question 1
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What is an atom?

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The numbers of the protons and electrons are exactly equal in an atom
Test: Radioactivity - Question 2
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What is the relative charge of a proton?

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One way of remembering this is to think about the first letter of proton - p for positive
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Test: Radioactivity - Question 3
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What is the relative charge of a neutron?

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Neutrons are neutral particles
Test: Radioactivity - Question 4
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What is the relative mass of a proton?
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Whilst the mass of a proton is not actually +1, it is helpful for calculating relative masses when dealing with atomic physics
Test: Radioactivity - Question 5
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What is the relative mass of an electron?
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OK, that's not strictly true but you would need nearly 2,000 electrons to equal the mass of one proton or one neutron. The element with the highest number of electrons is element 118. Its atoms contain only 118 electrons which contribute so little to the mass of an atom, their mass can be ignored
Test: Radioactivity - Question 6
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A neutral atom has five protons. How many electrons does it contain if it is not an ion?
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An atom will always have the same number of electrons as it does protons
Test: Radioactivity - Question 7
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What is an atom called which has lost an electron?
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Ions can be formed when atoms gain electrons as well
Test: Radioactivity - Question 8
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What does an atom's atomic number represent?
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Make sure that you know how to work out the number of particles in an atom from its atomic number and mass number, it is an easy way to gain marks
Test: Radioactivity - Question 9
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Atoms of an element always have the same number of protons but can have a different number of what?
Detailed Solution for Test: Radioactivity - Question 9
An element is recognised for having a specific fixed number of protons in every atom, the number of neutrons is variable. Atoms of a particular element which contain different numbers of neutrons are described as isotopes
Test: Radioactivity - Question 10
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If an atom has 3 electrons, how many protons does it contain?
Detailed Solution for Test: Radioactivity - Question 10
Remember, in an atom, the number of electrons is equal to the number of protons
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Important Questions for Radioactivity

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