IGCSE Chemistry - 1.7, Chemical purity

Descripción

Short test to prep me for actual test.
Yi Ying Chan
Test por Yi Ying Chan, actualizado hace más de 1 año
Yi Ying Chan
Creado por Yi Ying Chan hace más de 6 años
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Resumen del Recurso

Pregunta 1

Pregunta
When a substance is impure, the melting point increases.
Respuesta
  • True
  • False

Pregunta 2

Pregunta
What are the methods we can use to determine if a substance is pure?
Respuesta
  • Chromatography.
  • Distillation.
  • Checking melting and boiling points.
  • Looking through a microscope.
  • Reacting it with other substances.

Pregunta 3

Pregunta
When is purity important?
Respuesta
  • Making orange juice.
  • Baby food.
  • Drinking water.
  • Creating pillowcases.

Pregunta 4

Pregunta
Impure substances melt and boil over [blank_start]a range of temperatures[blank_end].
Respuesta
  • a range of temperatures

Pregunta 5

Pregunta
What industries require substances to be pure?
Respuesta
  • Sports industry.
  • Medicine industry.
  • Computer industry.
  • Music industry.
  • Beauty industry.
  • Food industry.
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