Properties Of Metals Flashcards

1
Q

Why can metals conduct electricity

A

The electrons are free to move

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2
Q

What is the word equation for metals reacting with water

A

Metal+water makes metal hydroxide+hydrogen

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3
Q

What is the word equation for the reaction of metal with acid

A

Metal + acid -> salt + hydrogen

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4
Q

What is the word equation for the reaction is a metal with oxygen

A

Metal + oxygen —> metal oxide

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5
Q

Where are the cut off points in the reactivity series

A

Calcium
Lead
Copper
Gold

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6
Q

Describe the structure of a metallic bond

A

the positive ions are tightly packed in a regular pattern amongst a sea of delocalised electrons

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7
Q

Describe the movement of electrons in an electrochemical cell

A

Electrons flow from the metal which is higher in the electrochemical series, through the wires, through the voltmeter, and to the metal which is Lower in the series

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8
Q

Describe the set up of a cell made from two half cells

A

Two beakers, connected by an ion bridge and a different metal in each dipped in a solution of its own ions. Each metal attached to a voltmeter.

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9
Q

What is the purpose of an ion bridge

A

To complete the circuit

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10
Q

What are the chemical reactions in cells called

A

Displacement reactions

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11
Q

How can cells be made with only one metal

A

Have a reactive metal in one cell, and another substance in the other cell which will accept electrons, and an ion bridge to complete the circuit

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12
Q

When does a displacement reaction occur

A

When a metal from the electrochemical series is mixed with an ion of a metal lower down in the series

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13
Q

What is a redox reaction

A

A reaction where both reduction (gain of electrons) and oxidation (loss of electrons) take place

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14
Q

How can metals be removed from their ores

A

Heated, heated with carbon, or electrolysed

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