The Periodic Table (AQA GCSE Chemistry): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
Why are alkali metals stored in oil?
Why are alkali metals stored in oil?
To prevent reaction with & moisture
Which physical property is shared by all alkali metals?
Which physical property is shared by all alkali metals?
They can be cut with a knife
Why do most alkali metals float on water?
Why do most alkali metals float on water?
They have low density
Why do alkali metals look dull on the outside?
Why do alkali metals look dull on the outside?
An oxide layer forms on the surface
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 electron
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?
It decreases
What happens to density as you go down Group 1?
What happens to density as you go down Group 1?
It increases
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 is produced when an alkali metal reacts with oxygen?
What is produced when an alkali metal reacts with oxygen?
Metal oxide
What colour flame is observed when potassium reacts with water?
What colour flame is observed when potassium reacts with water?
Lilac flame
Which gas is produced when alkali metals react with water?
Which gas is produced when alkali metals react with water?
Hydrogen