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select all the correct answers. properties of substances can be classif…

Question

select all the correct answers. properties of substances can be classified as physical or chemical properties. which statements describe chemical properties? a magnet is attracted to a piece of metal. a wire sags when weight is attached to it. silver tarnishes and becomes black when exposed to oxygen. water heated over a flame begins to bubble and evaporate. diesel fuel burns when it is heated.

Explanation:

Brief Explanations

Para determinar las propiedades químicas, debemos identificar cambios que involucran reacciones químicas (formación de nuevas sustancias).

  • A magnet is attracted to a piece of metal: Es una propiedad física (atracción magnética, sin cambio químico).
  • A wire sags when weight is attached: Propiedad física (deformación, sin cambio químico).
  • Silver tarnishes...: El plata se oxida (reacciona con oxígeno), formando una nueva sustancia (óxido de plata) → propiedad química.
  • Water heated...: Evaporación es un cambio físico (cambio de estado, sin nueva sustancia) → propiedad física.
  • Diesel fuel burns...: La combustión del diésel produce dióxido de carbono, agua, etc. (nuevas sustancias) → propiedad química.

Answer:

  • Silver tarnishes and becomes black when exposed to oxygen
  • Diesel fuel burns when it is heated