Which state of matter is found in stars and contains charged particles?

• A. Plasma
• B. Gases
• C. Solids
• D. Liquids

Answer: (A)

The concept being tested is that stars are made of plasma, a state of matter in which a large portion of atoms are ionized, producing free charged particles. In stars, temperatures are so extreme that electrons are ripped away from nuclei, leaving a mix of positively charged ions and free electrons. These charged particles move and flow, allowing electricity to conduct and the gas to emit light, which is why stars glow. This is different from solids, liquids, and neutral gases, where particles are bound or move without a significant population of free charges. So, the state that describes matter with charged particles in stars is plasma.