Topic 6 Groups In The Periodic Table Flashcards

1
Q

What are the group 1 elements called?

A

The alkaline metals

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2
Q

What are the physical properties of alkali metals?

A

Good conductors of heat and electricity
Shiny when freshly cut

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3
Q

What is produced when an alkaline metal reacts with water?

A

Alkaline metal hydroxide and hydrogen

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4
Q

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

A

Increases
Lithium fizzes steadily
Sodium melts into a ball potassium gives off sparks and hydrogen is produced

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5
Q

What is the density of alkaline metals?

A

Less dense then water so they float

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6
Q

What are the elements in group 7 called?

A

The halogens

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7
Q

How do the melting and boiling points change as you go down the group?

A

Melting and boiling points increase

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8
Q

What happens as you go down the group 7 elements?

A

The intermolecular forces between molecules become stronger
More heat energy is needed to overcome these forces

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9
Q

What happens when elements in group 7 are reacted?

A

In reactions with metals halogens gain electrons and are reduced
The outer shell gets further away from the nucleus
The force of attraction becomes weaker

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10
Q

What is the appearance of fluorine,chlorine,bromine and iodine at room temperature?

A

Fluorine=gas and goes pale yellow
Chlorine=gas and goes yellow-green
Bromine=liquid and goes red-brown
Iodine=solid and goes dark grey

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11
Q

How can you demonstrate a displacement reaction with a halogen?

A

Add a halogen solution to a metal halide solution, then see if the mixture darkens

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12
Q

What are group 0 elements called?

A

The noble gases

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13
Q

What are the chemical properties of noble gases?

A

Full outer shell electrons
Chemically inert
Don’t lose, gain and share electrons

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14
Q

Uses of noble gases?

A

Helium is less dense than air so its used in balloons and airships
Non-flammable
Argon is filling gas used in filament lamps
It’s un reactive and inert so it doesn’t burn away

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