Alpha particles are composed of how many protons and neutrons combined?

Alpha particles are indeed composed of 2 protons and 2 neutrons. This combination gives the alpha particle a total mass that is equivalent to that of a helium nucleus, which is why alpha particles are often identified with helium.

The presence of 2 protons contributes to the positive charge of the alpha particle, as protons carry a positive charge. The 2 neutrons add mass to the particle but do not contribute to the charge, as neutrons are neutral. This specific configuration is crucial in nuclear reactions, where alpha particles can be emitted from unstable heavy nuclei as a means of radioactive decay.

Understanding the structure of alpha particles helps clarify their role in nuclear chemistry and radiation, reinforcing the concept of particle composition and behavior in reactions that involve nuclear stability and transformation.