Question Video: Identifying the Space That Exchanges Heat Energy with a System | Nagwa Question Video: Identifying the Space That Exchanges Heat Energy with a System | Nagwa

Question Video: Identifying the Space That Exchanges Heat Energy with a System Chemistry • First Year of Secondary School

The space in which a chemical reaction takes place is known as the system. What is the name of the space where heat energy is absorbed from or released into?

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Video Transcript

The space in which a chemical reaction takes place is known as the system. What is the name of the space where heat energy is absorbed from or released into?

The question tells us that the space in which a chemical reaction takes place is known as the system. So, if we assume a chemical reaction is taking place in this conical flask, then the contents of the conical flask is the system. The reaction may require or release heat or thermal energy. Heat energy is absorbed from or released into the space outside the system because energy is neither created nor destroyed; it can only be transferred. This rule is known as the law of conservation of energy. So, when we say a system gains heat energy, this energy must have come from another source.

Likewise, when a system loses energy, the energy is not destroyed but is transferred to another space. This is likely to be the space surrounding the system. So, we call this space the surroundings. The surroundings is defined as anything that is not included as part of the system. So, the answer to the question “What is the name of the space where heat energy is absorbed from or released into?” is the surroundings.

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