Group 1: The Alkali Metals (OCR GCSE Chemistry A, Combined (Gateway Science Suite)): Flashcards

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Group 1: The Alkali Metals
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Why do alkali metals look dull?

Oxide layer forms on surface

How alkali metals are stored

In oil (prevents reaction with O2_2 & moisture)

Density property of alkali metals

Low density, so most float

Outer shell electrons in Group 1 metals

1 electron

Reactivity trend down Group 1

Increases

Why reactivity increases down Group 1

Outer electron further from nucleus, more easily lost

Melting point trend down Group 1

Decreases

Boiling point trend down Group 1

Decreases

Alkali metal + oxygen reaction

metal + oxygen ightarrow ightarrow metal oxide

Alkali metal + water reaction

metal + water ightarrow ightarrow metal hydroxide + hydrogen

Gas produced in alkali metal + water reaction

Hydrogen

Universal indicator colour with Group 1 alkali

Purple

Sodium reacting with water behaviour

Moves quicker and forms a ball shape

Potassium reacting with water flame colour

Lilac flame

Can alkali metals be cut with a knife?

Yes, all can be cut with a knife

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Simple Model of the Atom

The Periodic Table

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Simple Model of the Atom

The Periodic Table

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Simple Model of the Atom

The Periodic Table

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Simple Model of the Atom

The Periodic Table

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