Pl answer fast Identify which properties could correspond to solids, plasmas, or both.

maintain a unique shape.

particles collide infrequently with other particles.

particles have very high velocities.

can conduct electricity.

contain protons.

typically have a low temperature.

structure has long-range order.

Plasma is defined as the state of matter which is a hot ionized gas that consists of positively charged ions and negatively charged electrons. Like gases, particles of a plasma are also held by weak forces that are Vander waal forces. And, as it is a hot ionized gas therefore, particles of plasma move rapidly from one place to another. In a solid, molecules are held together by strong intermolecular forces of attraction. As a result, they are unable to move from their initial place but they can vibrate at their mean position. Hence, in solid substances the molecules have low kinetic energy. Also, molecules in a solid are placed in a long range order. Solids like copper, silver etc able to conduct electricity. Also, both plasma and solids contain proton because every atom contains neutrons, protons and electrons. Thus, we identify the properties corresponding to solids, plasmas, or both are as follows. Solids maintain a unique shape. Plasma particles collide infrequently with other particles. Plasma particles have very high velocities. Both can conduct electricity. Both contain protons. Solids typically have a low temperature. Solids structure has long-range order

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your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.