GROWTH DEVELOPMENT CHILD
SUMMATIVE ASSESSMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which particle or particles contribute to the mass of an atom?
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proton
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neutron
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electron
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None of the above
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Explanation:
Detailed explanation-1: -Only protons and neutrons contribute to an atom’s mass value.
Detailed explanation-2: -Although similar in mass, protons are positively charged, while neutrons have no charge. Therefore, the number of neutrons in an atom contributes significantly to its mass, but not to its charge.
Detailed explanation-3: -The nucleus contains the majority of an atom’s mass because protons and neutrons are much heavier than electrons, whereas electrons occupy almost all of an atom’s volume.
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