Acids and metals Flashcards

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1
Q

What’s the reactivity series?

A

A list of metals in order of how reactive they are.

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2
Q

What happens in a displacement reaction?

A

In a displacement reaction, a more reactive metal displaces a less reactive metal.

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3
Q

What’s a composite?

A

A mixture of materials with properties that are a mixture of the materials in it.

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4
Q

What’s a thermite reaction?

A

The reaction of aluminium with iron oxide to make aluminium oxide and iron.

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5
Q

What’s the name of a carbon displacement reaction?

A

Smelting

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6
Q

What’s a ceramic?

A

A compound such as a metal silicate or oxide that is hard, strong and has a high melting point.

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7
Q

What’s a polymer?

A

A polymer is a substance with very long molecules. Each polymer molecule has identical groups of atoms repeated many times.

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8
Q

What are the two types of polymers and what is the difference?

A

Natural polymers (made from animals or plants) and Synthetic polymers (not naturally occurring).

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9
Q

What’s an ore?

A

A rock you can extract a metal from.

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10
Q

What’s oxidation?

A

A chemical reaction where a substance gains oxygen.

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11
Q

What’s reduction?

A

A chemical reaction where a substance loses oxygen.

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12
Q

What’s carbon-fibre?

A

A material made of thin tubes of carbon.

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13
Q

Is a ceramic a compound or a mixture?

A

A compound

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14
Q

What is produced when a metal reacts with hydrochloric acid?

A

A metal chloride and hydrogen is produced.

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15
Q

Describe the molecules in low-density polyethene (LDPE) and the properties of LDPE.

A

The molecules in LDPE slide over each other, this makes it flexible. LDPE is also strong.

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16
Q

Describe the properties of high-density polyethene (HDPE).

A

High-density polyethene is strong and flexible, but is stronger than low-density polyethene. HDPE’s surfaces are very smooth.

17
Q

What does PVC stand for?

A

polyvinyl chloride

18
Q

Name 3 properties of PVC.

A

PVC is waterproof, flexible and doesn’t conduct electricity.