Group 1 – Alkali metals (Edexcel GCSE Chemistry Combined Science): Flashcards
📚Flashcards
Practise the cards
15 cards from this deck
ShowHide
Practise the cards
15 cards from this deck
Why do alkali metals look dull on the outside?
Why do alkali metals look dull on the outside?
Due to oxide layer formation
Why are alkali metals stored in oil?
Why are alkali metals stored in oil?
To prevent reaction with oxygen and moisture in air
Why do most alkali metals float?
Why do most alkali metals float?
They have low density
Electrons in outer shell of Group 1 metals
Electrons in outer shell of Group 1 metals
electron
Why are Group 1 metals very reactive?
Why are Group 1 metals very reactive?
They bond by losing their outer electron
Reactivity trend down Group 1
Reactivity trend down Group 1
Reactivity increases
Why does reactivity increase down Group 1?
Why does reactivity increase down Group 1?
Outer electron further from nucleus, more easily lost
Density trend down Group 1
Density trend down Group 1
Density increases
Melting point trend down Group 1
Melting point trend down Group 1
Melting point decreases
Products when alkali metal reacts with oxygen
Products when alkali metal reacts with oxygen
Metal oxide
Products when alkali metal reacts with water
Products when alkali metal reacts with water
Metal hydroxide + hydrogen
Gas produced when alkali metal reacts with water
Gas produced when alkali metal reacts with water
Hydrogen
What happens to alkali metal on water surface?
What happens to alkali metal on water surface?
Floats, moves, and fizzes
Sodium's shape when reacting with water
Sodium's shape when reacting with water
Forms a ball shape
Flame color when potassium reacts with water
Flame color when potassium reacts with water
Lilac flame