During an experiment, iron powder and sulfur powder were mixed thoroughly and placed on a filter paper. When a magnet was moved
below the filter paper, the iron fillings stood up vertically as they were attracted by the magnet. The sulfur powder showed no change in position. Which of the following correctly justifies the observation? Iron and sulfur formed a compound; therefore, they lost their individual properties. Iron and sulfur formed a compound; therefore, they retained their individual properties. Iron powder and sulfur powder combined physically; therefore, they lost their individual properties. Iron powder and sulfur powder combined physically; therefore, they retained their individual properties.
Iron powder and sulfur powder combined physically; therefore, they retained their individual properties.
Explanation:
Iron combines with sulfur physically as such there is no change in the individual chemical property of iron and sulfur. Iron has magnetic property and sulfur does not. So iron .gets attracted by the magnet and can be separated from sand. In a chemical process the reactants combine chemically to form a new product that has chemical properties distinct from the parent compounds. In a physical combination process no new chemical product is formed with distinct properties from the parent compound.
Answer: En estos grupos de los elementos de transición se encuentran las llamadas tierras raras, separadas del resto de elementos de la tabla, que pertenecen al grupo IIIB y se les conoce como lantánidos y actínidos.
An altered state of consciousness can be defined as any state of consciousness that deviates from normal waking consciousness, in terms of marked differences in our level of awareness, perceptions, memories, thinking, emotions, behaviours and sense of time, place and self-control.
