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Chemistry > Groups In Periodic Table > Flashcards

Groups In Periodic Table Flashcards

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1
Q

Alkali metal and water

A

Metal hydroxide and hydrogen

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2
Q

Properties of alkali metals

A

Soft, ductile, low density, low melting point compared to other metals, conductors, readily react with water

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3
Q

Why do alkali metals readily react more the further down on the PT

A

More atomic radii. More shielding. Weaker force of attraction between positive nucleus and negative electron. Keen to be lost for stability

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4
Q

Halogen and hydrogen

A

Hydrogen halide

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5
Q

Halogen and metal

A

Metal halide

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6
Q

Test for chlorine gas

A

Turns damp blue litmus paper red then bleaches white. Gas has to dissolve and react with the water. Hydrogen from the water makes hydrogen chloride which dissolves to make hydrochloric acid

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7
Q

Fluorine

A

F. Gas. Pale yellow

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8
Q

Chlorine

A

Cl. Gas. Pale green. Dense. Poisonous

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9
Q

Bromine

A

Br. Liquid. Red orange. Dense. Poisonous

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10
Q

Iodine

A

I. Solid. Purple grey. Crystalline

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11
Q

Astetine

A

At. Solid. Black

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12
Q

Property of hydrogen halides

A

Soluble

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13
Q

Halogen reactivity

A

Higher up in the PT, more reactive. Outer shell is nearer positive nucleus so force of attraction is greater and attracts free electrons strongly. Also causes displacement reactions when reacted with a solution

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14
Q

Inert

A

Chemically inactive

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15
Q

Properties of noble gases

A

Colourless gases. Inert (chemically unreactive). Non-flammable. Low melting point poor conductor no charge so can’t carry current. Stable

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16
Q

Argon uses

A

Filament bulbs. Non flammable. Stops burning away. Welding. Stops metal reacting with oxygen

17
Q

Helium uses

A

Balloons. Airships. Less density than air. Floats

18
Q

Pattern of properties in noble gases

A

Boiling point decreases. Density decreases. Further down PT

19
Q

Neon uses

A

Lights and signs. Conduct electricity and fluoresce when given high voltage (not current) - energy given off as light when electron moves up an energy level

20
Q

Krypton uses

A

Lasers and flash photography. Releases energy under high voltage capable of cutting mediums. Used to stop flash filament from burning away

21
Q

What happens to the melting point of the elements as you go down group 1?

A

It decreases. Because the metallic bonding is stronger at the top of the group

22
Q

What happens to the density of noble gases as you go down group 0?

A

It increases

Chemistry (10 decks)

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