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Introduction to Chemical Level: Atoms and Atomic Structure

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Introduction to Chemical Level: Atoms and Atomic Structure

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Questions and Answers

What is the significance of the atomic number in an atom?

It indicates the position of the atom in the periodic table

It defines the number of electrons in an atom

It determines the chemical properties of the atom (correct)

It determines the mass number

What are isotopes based on?

Electron cloud distribution

Mass number (correct)

Valence electrons

Atomic weight

How is the atomic weight calculated?

By multiplying the atomic mass by the number of electrons

By adding the atomic number and the mass number

By averaging the different atomic masses and isotopic proportions (correct)

By summing the valence electrons and neutron count

Which subatomic particle has a neutral charge?

Neutron Signup and view all the answers

What is the function of the valence shell in an atom?

Determines bonding properties Signup and view all the answers

What determines the reactivity of an atom?

Electrons in the electron cloud Signup and view all the answers

Which term describes a pure substance composed of atoms of one kind?

Element Signup and view all the answers