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GCSE Chem > Group 1 - The Alkali Metals > Flashcards

Group 1 - The Alkali Metals Flashcards

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1
Q

What is the name given to group 1 elements?

A

The Alkali Metals.

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2
Q

What happens when the elements are placed in water?

A

They all react vigorously

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3
Q

Why do many elements in the group act the same way?

A

They all have one electron in the outer shell.

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4
Q

List some group 1 elements.

A

Lithium, Sodium, Potassium, Rubidium, Caesium, Francium

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5
Q

When group 1 elements reacts with water, what products are formed?

A

A metal Hydroxide Solution + Hydrogen

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6
Q

Why are group 1 elements known as the Alkali metals?

A

They are all metals, and when they react with water they form an Alkaline (Metal Hydroxide Solution)

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7
Q

The reaction of group 1 elements with water produces fizzing/effervescence. What causes this?

A

Hydrogen is released.

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8
Q

The reaction of group 1 elements with oxygen in the air produces what products?

A

Metal Oxides.

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9
Q

What oxide is formed when Lithium reacts with water?

A

Lithium Oxide (Li2O)

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10
Q

What oxides are formed when Sodium reacts with water?

A 
a mixture of:
Sodium Oxide (Na2O)
Sodium Peroxide (Na2O2)
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11
Q

What oxides are formed when Potassium reacts with water?

A 
a mixture of:
Potassium Peroxide (K2O2)
Potassium Superoxide (KO2)
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12
Q

Why do group 1 elements tarnish when left?

A

They react with the oxygen in air leaving a dull metal oxide layer.

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13
Q

What happens to the reactivity of Elements as you go down group 1?

A

The reactivity increases.

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14
Q

Which group 1 metal is the least reactive?

A

Lithium (Li) as it is the first one.

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15
Q

Which is the most reactive out of Lithium, Sodium and Potassium?

A

Potassium (K). It is the lowest down of the 3.

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16
Q

Name an extremely reactive group 1 element.

A

Caesium or Francium

17
Q

Predict what happens in the reaction of caesium and water.

A

Explosion

18
Q

As you go down group 1, hat happens to the rate of reaction in elements.

A

Decreases as they are becoming more reactive.

19
Q

Explain why group 1 elements become more reactive as you go down the table.

A
  • The outermost electron is getting further from the nucleus.
  • Which means forces of attraction are lessened between the nucleus and the outermost electron.
  • The outer electron is lost easier and the metals are more reactive.

GCSE Chem (19 decks)

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