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In this episode of the Quantum Conversations Podcast, the host, Alvin O'Keefe, discusses the differences between physical reactions and chemical reactions. He introduces a guest named Abner who asks about what a physical reaction is. Alvin explains that a physical reaction is when there is a change in the physical properties of a material or substance, such as color, state of matter, texture, density, shape, or cutting. He also mentions a video that demonstrates a physical reaction. Welcome back to the Quantum Conversations Podcast with me, your host, Alvin O'Keefe. In today's episode, we will discuss the differences between physical reactions and chemical reactions. As always, we will have guests come on the show and ask questions. We have our first guest, Abner, here with his question. Hi. My question for you is, what is a physical reaction? A physical reaction is a reaction in which a change to the physical properties of a material or substance occurs. A few examples of physical changes are color, state of matter, texture, density, shape, and cutting. Watch this video below showing you an example of a physical reaction.