Chemistry-Grade 9-MCQ1-Structure of the Atom

The mass of an atom is represented by the mass of its:

Electron cloud

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Nucleus

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Electron Cloud and the Nucleus

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The ____________________ do not affect the charge of an atom:

Protons

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Electrons

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Neutrons

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Electron cloud

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The charge of the nucleus is equal to the charge of the:

Protons

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Neutrons

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Protons and electrons

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None of the above

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The element that has 16 protons in its nucleus is:

Sodium

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Sulfur

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Potassium

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Chlorine

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The number of the protons of an atom is called:

Atomic mass

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Atomic number

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Mass number

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Valency

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Atoms that have the same number of protons but a different number of electrons are called:

Isotopes

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Ions

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Neutral Atoms

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Compounds

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Atoms that have the same number of protons but a different number of neutrons are called:

Isotopes

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Ions

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Neutral Atoms

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Compounds

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The atoms that lose electrons become:

Negatively charged ions

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Positively charged ions

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Negatively charged isotopes

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Brevet Chemistry Semester 1

Chapter 1: Structure of the Atom

Chemistry-Grade 9-MCQ1-Structure of the Atom

Instructor Shaghig Chaparian January 31, 2021

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