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Chemistry > The Alkali Metals > Flashcards

The Alkali Metals Flashcards

1
Q

Alkali metal are in group…

A

1

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2
Q

They are … Reactive

A

Extremely

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3
Q

Reactivity in alkali metals increases…

A

Downwards

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4
Q

Lithium is the … Reactive alkali metal

A

Least

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5
Q

As reactivity in alkali metals increases, the melting and boiling points … While the density generally…

A

Decrease, while the density generally increases

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6
Q

Alkali metals are very reactive as…

A

They only have one electron to lose

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7
Q

Alkali metals as hard/soft

A

Soft

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8
Q

Alkali metals become harder/softer as you go down the group

A

Softer

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9
Q

Alkali metals tarnish after … Of exposure to air

A

Seconds

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10
Q

When cut alkali metals are…

A

Shiny and silver

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11
Q

Alkali metals react … with air to form oxides

A

Quickly

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12
Q

Alkali metals react … With water to form … Solutions of…

A

Rapidly and violently with water to form strongly alkaline solutions of metalhydroxides

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13
Q

Lithium, sodium and potassium are stored…

A

Under oil

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14
Q

Rubidium and Caesium are stored…

A

In an inert gas in sealed glass tubes

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15
Q

Metal + water =

A

Metal hydroxide + hydrogen

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16
Q

All alkali metal hydroxides are… And will turn pH universal indicator paper .. When dissolved in water

A

Bases and will turn it purple

17
Q

Sodium … When it reacts with water

A

Floats, fizzes and melts, perhaps forming a white trail of sodium hydroxide

18
Q

Lithium … When it reacts with water

A

Floats and fizzes

19
Q

Potassium … When it reacts with water

A

Floats, fizzes, melts and burns

20
Q

Rubidium and Caesium … When they react with water

A

Explode

21
Q

The increase in reactivity in alkali metals is due to…

A

The distance from the nucleus due to electron shells (they lose the electron)

22
Q

All group one metal ions are which colours?

A

Colourless

23
Q

Group one compounds are … In water and are …. Solids

A

Mostly soluble in water and typical white ionic solids

24
Q

Lithium burns with a … Flame

A

Red

25
Q

Potassium burns with a .. Flame

A

Lilac

26
Q

Sodium burns with a … Flame

A

Yellow

Chemistry (18 decks)

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