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Atomic Structure and Chemical Elements Quiz

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Atomic Structure and Chemical Elements Quiz

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Questions and Answers

What is the main factor that distinguishes one chemical element from another?

Number of protons in their atoms (correct)

Number of electrons in their atoms

Size of their atoms

Number of neutrons in their atoms

What are isotopes of the same element defined by?

Same number of protons but different number of neutrons (correct)

Same number of electrons but different number of protons

Same number of protons and neutrons

Same number of neutrons but different number of protons

What causes electrons to be bound to the nucleus in an atom?

Electromagnetic repulsion

Opposing charge between electrons and nucleus (correct)

Strong nuclear force

Gravitational force

What happens when an atom has more electrons than protons?

<p>It becomes a negative ion (anion)</p> Signup and view all the answers

Why is it not possible to see atoms with conventional microscopes?

<p>Atoms are smaller than the shortest wavelength of visible light</p> Signup and view all the answers

Study Notes

Chemical Elements

The main factor that distinguishes one chemical element from another is the number of protons in the atomic nucleus.

Isotopes

Isotopes of the same element are defined by having the same number of protons (atomic number) but differing numbers of neutrons.

Atomic Structure

Electrons are bound to the nucleus in an atom due to the attraction between the positively charged protons and negatively charged electrons.

Ions

When an atom has more electrons than protons, it becomes a negatively charged ion, known as an anion.

Atomic Visibility

It is not possible to see atoms with conventional microscopes because atoms are extremely small, with diameters in the range of 1 to 3 angstroms (Å).

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Description

Test your knowledge of atomic structure and chemical elements with this quiz. Explore the composition of atoms, the significance of protons, neutrons, and electrons, and how elements are distinguished by the number of protons they contain. Learn about isotopes and their relation to atomic structure.