Testing for ions

Descrição

Unit 3
Daisy Fletcher-Cooney
Quiz por Daisy Fletcher-Cooney, atualizado more than 1 year ago
Daisy Fletcher-Cooney
Criado por Daisy Fletcher-Cooney mais de 9 anos atrás
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Resumo de Recurso

Questão 1

Questão
What group are the alkali metals in?
Responda
  • Group 1
  • Group 7
  • Group 3
  • Group 4

Questão 2

Questão
What colour flame does lithium produce?
Responda
  • Orange
  • Yellow
  • Lilac
  • Red

Questão 3

Questão
Sodium produces an orange flame
Responda
  • True
  • False

Questão 4

Questão
What colour does potassium produce?
Responda
  • Blue
  • Lilac
  • Red
  • Yellow
  • Green

Questão 5

Questão
What colour flame does calcium produce?
Responda
  • Brick red
  • lilac
  • red
  • orange

Questão 6

Questão
Ammonium ions can be identified in a solution by adding dilute sodium hydroxide solution and gently heating. If ammonium ions are present, they will be converted to ammonia gas. Ammonia has a characteristic choking smell. It also turns damp red litmus paper or damp universal indicator paper blue.
Responda
  • True
  • False

Questão 7

Questão
When NaOH is added to Fe2+, what colour is the precipitate?
Responda
  • Orange-brown
  • green
  • blue

Questão 8

Questão
When NaOH is added to Fe3+, what colour is the precipitate?
Responda
  • Green
  • Orange-brown
  • Blue

Questão 9

Questão
When NaOH is added to Cu2+, the precipitate is green
Responda
  • True
  • False

Questão 10

Questão
When dilute NaOH is added to Zn2+, a white precipitate forms
Responda
  • True
  • False

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