A Level Physics Practice Exam

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Study for the A Level Physics Exam. Our quiz features flashcards and multiple choice questions, each with hints and explanations. Prepare thoroughly!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

Which particles are considered uncharged?

Protons
Electrons
Neutrons
None of the above

The correct answer is: Neutrons

The neutrons are considered uncharged particles because they have a neutral electric charge, meaning they carry no net charge. This characteristic distinguishes them from protons, which have a positive charge, and electrons, which possess a negative charge. Neutrons play a crucial role in the nucleus of atoms, helping to stabilize the positive charge of protons and influencing the overall properties of the atomic nucleus, such as its stability and the types of isotopes that can exist. In contrast, protons and electrons, being charged particles, contribute to the electric forces within an atom, affecting interactions with other atoms and influencing chemical behavior. The fact that neutrons are uncharged allows them to exist in the nucleus without repelling or attracting other charged particles, thus contributing to the structure and stability of matter.