Understand that atoms are composed of smaller particles called subatomic particles, which determine the atom's properties and behavior.
Identify the three main types of subatomic particles: protons, neutrons, and electrons.
Recognize that protons carry a positive electrical charge and are located in the nucleus (center) of the atom.
Know that neutrons have no electrical charge (they are neutral) and are also found in the nucleus alongside protons.
Understand that electrons carry a negative electrical charge and orbit the nucleus in regions called electron shells or clouds.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Protons
Protons are positively charged subatomic particles found in the nucleus of an atom. They determine the atomic number and identity of an element. Each proton carries a charge of +1 and contributes to the overall mass of the atom.
Neutrons are neutral subatomic particles located in the nucleus alongside protons. They have no electric charge and contribute to the atomic mass. Neutrons play a key role in stabilizing the nucleus by offsetting the repulsive forces between protons.
Electrons are negatively charged subatomic particles that orbit the nucleus in electron shells. Each electron carries a charge of -1 and has negligible mass compared to protons and neutrons. Electrons are involved in chemical bonding and reactions.