Another statement When matter can be transferred between the system and its surroundings we call it an open system; when such transfer is not possible the system is closed An isolated system is a closed system with neither mechanical nor thermal contact with its surroundings 4上一内容下一内容令回主目录 返回 2021/2/21上一内容 下一内容 回主目录 返回 2021/2/21 Another statement When matter can be transferred between the system and its surroundings we call it an open system; when such transfer is not possible the system is closed. An isolated system is a closed system with neither mechanical nor thermal contact with its surroundings