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Chemistry > Groups In The Periodic Table > Flashcards

Groups In The Periodic Table Flashcards

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1
Q

What group are the alkali metals?

A

1

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2
Q

What happens to the melting points of the alkali metals as you go down the group?

A

They decrease

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3
Q

What happens to the reactivity as you go down the alkali metals?

A

Reactivity increases

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4
Q

What are 2 properties of alkali metals?

A

Low melting and boiling points

Very soft

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5
Q

What do alkali metals form?

A

Ionic compounds

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6
Q

Alkali metal + water…

A

—> metal hydroxide + hydrogen

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7
Q

What happens to lithium in water? (3)

A

Moves around the surface

Fizzes

Dissolves

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8
Q

What happens to sodium and potassium in water? (3)

A

Move around surface

Fizz

Melt

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9
Q

What happens to potassium in water?

A

It glows

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10
Q

What group are the halogens?

A

7

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11
Q

What happens to the melting point of halogens as you go down the group?

A

They increase

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12
Q

What happens to the reactivity of the halogens as you go down the group?

A

It decreases

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13
Q

What is chlorine like at room temperature?

A

Pale green gas

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14
Q

What is bromine like at room temperature?

A

Red/brown liquid

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15
Q

What is iodine like at room temperature?

A

Dark grey solid

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16
Q

Halogen+hydrogen…

A

—> hydrogen halide

17
Q

What group are the noble gases?

A

0

18
Q

What are the 4 properties of noble gases?

A

Colourless
Low melting and boiling points
Poor conductors
Non flammable

19
Q

What is helium used for?

A

Balloons

20
Q

Why is helium used for balloons? (2)

A

Lower density than air

Non flammable

21
Q

What is neon used for?

A

Lights

22
Q

What is argon used for?

A

Filament lamps

23
Q

What is krypton used for?

A

Photography

24
Q

What does inert mean?

A

Don’t react easily with anything

25
Q

Noble gases are I….

A

Inert

26
Q

What decreases down the group of noble gases? (3)

A

Melting point
Boiling point
Density

27
Q

Why do noble gases exist as single atoms?

A

Because they don’t form bonds easily with other atoms

Chemistry (7 decks)

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