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Atomic Structure and Subatomic Particle Masses

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Atomic Structure and Subatomic Particle Masses

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Questions and Answers

What is the relative mass of a neutron in comparison to a proton?

Greater than 1

Exactly 1 (correct)

Indeterminate

Smaller than 1

What charges do protons and electrons carry?

Protons are neutral, electrons are positive

Both carry a negative charge

Protons carry a positive charge, electrons carry a negative charge (correct)

Both carry an equal and opposite charge

Which of the following accurately describes the nucleus of an atom?

It contains only neutrons

It has a large volume compared to the whole atom

It holds most of the mass of an atom and contains protons and neutrons (correct)

It is made entirely of electrons

Which statement about electron mass is correct?

<p>An electron has a very small mass compared to protons and neutrons</p> Signup and view all the answers

How can the total number of subatomic particles in an atom be determined?

<p>By adding the atomic number and mass number</p> Signup and view all the answers

Study Notes

Atomic Structure

Atoms have a central nucleus containing protons and neutrons.
Electrons orbit the nucleus in shells.
The nucleus is extremely small compared to the overall atom (much smaller than a bacterium or human hair).
Protons are positively charged subatomic particles.
Neutrons are uncharged subatomic particles.
Electrons are negatively charged subatomic particles with negligible mass relative to protons and neutrons.
Most of an atom's mass is concentrated in the nucleus due to the presence of protons and neutrons.
Relative mass of a proton is 1.
Relative mass of a neutron is 1.
The charges of protons and electrons are equal and opposite.

Subatomic Particle Masses

Subatomic particle masses are extremely small.
Rather than using absolute kilogram values, relative masses are used.
Relative mass is how many times heavier a particle is compared to another.

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Description

Explore the fascinating world of atomic structure and subatomic particles with this quiz. Understand the roles of protons, neutrons, and electrons, and how their relative masses are defined. Test your knowledge of atom composition and particle charges in this engaging quiz.