Question

pregunta 9 (1 punto)
(01.04 mc)
a student wants to examine a substance without changing its identity. which of the following properties of the substance should the student examine?
○ a ductility, because it can be observed by altering the shape of the substance
○ b. flammability, because it can be observed by altering the shape of the substance
○ c ductility, because it can be observed by changing the atoms in a molecule of the substance
○ d flammability, because it can be observed by changing the atoms in a molecule of the substance

Explanation:

La ductilidad es una propiedad física, lo que significa que se puede observar y medir sin cambiar la identidad química de la sustancia. Alterar la forma de un material (por ejemplo, estirar un metal en un alambres) no cambia su composición química. En cambio, la inflamabilidad es una propiedad química, ya que implica un cambio químico (como la combustión).

Answer:

a. Ductility, because it can be observed by altering the shape of the substance