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Science Y9 Spring CAT > Material Science > Flashcards

Material Science Flashcards

1
Q

What is an ore?

A

Ores are metals found in rocks as compounds. They contain enough metal to make it economic to extract the metal.

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2
Q

What is a native ore? Give two examples

A

An ore found in a pure form in the rock.

Gold and Platinum are native ores.

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3
Q

What is oxidation?

A

A reaction where oxygen is added to a compound.

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4
Q

What is reduction?

A

A reaction where oxygen is removed from a compound.

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5
Q

What is a polymer?

A

A substance made of very long molecules with identical groups of atoms repeated many times.

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6
Q

What is composite

A

A substance made up of a number of different materials.

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7
Q

What is a compound?

A

Two or more elements chemically bonded together

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8
Q

Name the elements in the reactivity series from most reactive to least reactive

Hint : zombie story

A

Potassium
Sodium
Calcium
Magnesium
Aluminium
Carbon
Zinc
Iron
Tin
Lead
Hydrogen
Copper
Silver
Gold
Platinum

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9
Q

Give examples of a polymer

A

DNA
Cellulose
Starch
Plastic

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Science Y9 Spring CAT (3 decks)

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