Metals quizzes Flashcards Preview

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Flashcards in Metals quizzes Deck (14):
1

What are metal ores

valuable metals that react with other elements,
found in the earths crust

2

the more reactive the metal, the... it is to ...

harder, extract

3

lots of common metals react with ... to form the ... that are often the ores the metals need to be extracted from

oxygen, oxides

4

The order of the reactivity series, GO

P S C M A C Z I T L
Peeing sat cross makes a cramp zit in the lip

5

How are the ' less reactive than carbon' extracted

reduction reaction with carbon
heat the ore with carbon

6

How are the ' more reactive than carbon' extracted

electrolysis
melt the ore and use as electrolyte

7

general Properties of metals, GO

Strong
Malleable
conductors

8

Which metals in the reactivity series are more likely to corrode

Higher up, most reactive

9

What property would make a metal 'soft'

A regular arrangement, layers, of identical atoms which can slide over each other

10

Define an alloy

A mixture of metals

11

Give an example of an alloy

Steel, usually carbon+iron

12

Benifits of alloys over pure metals

Form an irregular arrangement, harder for layers to slide over each other

13

Whats meant by an alloy with 'shape memory'

object goes back to original shape when heated

14

Reasons for recycling metals

Finite amount, resource conservation
Cheaper
Less pollution