which of the following are examples of physical change.Glass is heated to be moulded into a vaseA large block of ice is shattered into smaller piecesA tree is bent by a strong windA piece of wood burns on a fire
Question
which of the following are examples of physical change.Glass is heated to be moulded into a vaseA large block of ice is shattered into smaller piecesA tree is bent by a strong windA piece of wood burns on a fire
Solution
Para determinar cuáles de los ejemplos proporcionados son cambios físicos, es importante entender que un cambio físico es aquel en el que la materia cambia de forma o estado, pero no su composición química. Vamos a analizar cada ejemplo:
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Glass is heated to be moulded into a vase: Este es un cambio físico. El vidrio se calienta y se moldea, pero su composición química sigue siendo la misma.
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A large block of ice is shattered into smaller pieces: Este también es un cambio físico. El hielo se rompe en pedazos más pequeños, pero sigue siendo agua en estado sólido.
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A tree is bent by a strong wind: Este es un cambio físico. El árbol se dobla debido al viento, pero no cambia su composición química.
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A piece of wood burns on a fire: Este es un cambio químico. La madera se quema y se convierte en cenizas y gases, cambiando su composición química.
Por lo tanto, los ejemplos de cambios físicos son:
- Glass is heated to be moulded into a vase
- A large block of ice is shattered into smaller pieces
- A tree is bent by a strong wind
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