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Year 10 Flash Cards > Science - Metals and Materials > Flashcards

Science - Metals and Materials Flashcards

1
Q

What are the properties of metals

A

Lustre (metals shiny when fresh cut)
Malleable (metals can be bent or hammered to new shape)
Ductile (metals can be stretched into thin wires)
Sonorous - metals make a sound when hit

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2
Q

What good conductors do metals have

A

Heat and electricity

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3
Q

What is the reactivity series for metals

A

(least reactive)
Potassium
Sodium
Lithium
Calcium
Magnesium
Aluminium
Zinc
Iron
Nickel
Tin
Copper
Silver
Gold
(most reactive)

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3
Q

What is corrosion

A

When metals are exposed to the environment they can deteriorate or corrode which is called oxidation

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4
Q

Oxidation in metals form ________

A

Metal Oxides

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5
Q

What is rust

A

A reddish orange powder of hydrated iron oxide

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6
Q

What does it need for iron to rust

A

Water and oxygen

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7
Q

The more ________ a metal is the _____ it could rust

A

reactive, less

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8
Q

What is some protection from rusting

A

Iron can be coated over by plastic, paint, oil, chrome plating or a layer of zinc (galvanization) for iron to rust less.

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9
Q

What is word equation for reactions of metals with acid

A

Metal + acid (arrow) Metal salt + hydrogen gas

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10
Q

What is word equation for reaction of metals with oxygen

A

metal + oxygen (arrow) metal oxide

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11
Q

Count to 10 in organic

A

Methane
Ethane
Propane
Butane
Pentane
Hexane
Heptane
Octane
Nonane
Decane

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11
Q

What are hydrocarbons

A

a molecule made completely of nly carbon and hydrogen atoms

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11
Q

What are organic compounds

A

Where all compounds are made up of 1 or more carbon atoms7

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12
Q

What are polymers

A

Large molecules made of many repeating units called monomers

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13
Q

What do different repeating monomers create

A

Different polymers and different plastics

14
Q

What are thermosetting polymers

A

Plastics that arent affected by heat once they have been formed which makes these plastics difficult to recycle

15
Q

What is thermoplastic polymers

A

Plastics that become soft or mouldable when heated and the process of heating can be repeated continuously which makes it easy to recycle.

16
Q

What is polyvinylchloride used for

A

made from vinyl chloride monomer and used for car seats and wire insulation

17
Q

What is polythene used for

A

high density polythene for containers and low density polythene for insulation

18
Q

What is polystyrene used for

A

used for food containers, disposable cutlery, foam packaging

19
Q

What is polycarbonate’s qualities

A

Tough, transparent and heat resistant

20
Q

What is polypropylene used for

A

used for kayaks, bottles and clothes

21
Q

What is polyester used for

A

used for fabrics, rope and moulded parts

22
Q

What is nylon used for

A

In fibre form it is used for clothing and rope.

Year 10 Flash Cards (18 decks)

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