IGCSE Chemistry - 1.7, Chemical purity

Descrição

Short test to prep me for actual test.
Yi Ying Chan
Quiz por Yi Ying Chan, atualizado more than 1 year ago
Yi Ying Chan
Criado por Yi Ying Chan quase 6 anos atrás
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Resumo de Recurso

Questão 1

Questão
When a substance is impure, the melting point increases.
Responda
  • True
  • False

Questão 2

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

Questão 3

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

Questão 4

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

Questão 5

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

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