Group 1: The Alkali Metals (OCR GCSE Chemistry A, Combined (Gateway Science Suite)): Quizzes
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Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
Why do alkali metals look dull on the outside?
Why do alkali metals look dull on the outside?
Formation of oxide layer
Why are alkali metals stored in oil?
Why are alkali metals stored in oil?
To stop reaction with and moisture
Why do most alkali metals float on water?
Why do most alkali metals float on water?
They have low density
How many electrons do Group 1 metals have in their outer shell?
How many electrons do Group 1 metals have in their outer shell?
1
What happens to reactivity as you go down Group 1?
What happens to reactivity as you go down Group 1?
Increases
Why does reactivity increase down Group 1?
Why does reactivity increase down Group 1?
Outer electron further from nucleus
What happens to melting point as you go down Group 1?
What happens to melting point as you go down Group 1?
Decreases
What happens to density as you go down Group 1?
What happens to density as you go down Group 1?
Increases
What are the products when an alkali metal reacts with oxygen?
What are the products when an alkali metal reacts with oxygen?
Metal oxide
What are the products when an alkali metal reacts with water?
What are the products when an alkali metal reacts with water?
Metal hydroxide + hydrogen
What colour does universal indicator turn when alkali metals react with water?
What colour does universal indicator turn when alkali metals react with water?
Purple
What special observation is seen when potassium reacts with water?
What special observation is seen when potassium reacts with water?
Produces a lilac flame