C1.3 Metals and Their Uses Flashcards Preview

GCSE Chemistry > C1.3 Metals and Their Uses > Flashcards

Flashcards in C1.3 Metals and Their Uses Deck (29):
1

where are metals found?

in the Earth's crust

2

what is a metal ore?

a rock with the metal compund or metal in it

3

If it is worth extracting a particular metal depends on:

how easy it is to extract from it's ore and how much metal the ore contains

4

Name some metals that are found in their natural state

gold and silver (they're unreactive)

5

What does the way you extract a metal depend on?

it's position in the reactivity series

6

What element can you use for extracting copper, lead and iron?

carbon

7

metal oxide+carbon=

metal+carbon dioxide

8

How are elements above carbon extracted?

electrolysis

9

Where do you extract iron from it's ore?

a blast furnace

10

iron oxide+carbon=

iron+carbon dioxide

11

Uses of iron from the blast furnace

contains impurities, makes it brittle. when molten used as cast iron

12

What is an alloy?

a metal mixed with another metal

13

What is an alloy of iron?

steel

14

Advantage of high-alloy steels

does not rust

15

What are titanium and aluminium used for?

making of an aeroplane

16

Properties of aluminium and titanium

not corrosive, strong, low density

17

Properties of aluminium

silvery, shiny, light, low density, good conductor of energy and electricity, malleable and ductile, not corrosive,

18

Uses of aluminium

drinks cans, cooking foil, saucepans, bicycles, aeroplanes

19

Properties of titanium

silvery-white, very strong, resistant to corrosion, high melting point

20

Uses of titanium

parts of jet engines, hip joints, nuclear reactors

21

What element do you use to extract titanium

sodium or magnesium

22

What is copper extracted from?

copper-rich ores

23

How to extract copper

smelting or use of sulphuric acid

24

How do you extract copper from low-grade ores?

bioleaching or phytomining

25

Properties of the transition metals

good conductors, strong and malleable

26

copper+tin

bronze

27

copper +zinc

brass

28

Disadvantages to using metals in construction

iron and steel can rust, extracting metals can damage environment, more expensive

29

Advantages to using metals in construction

good electrical conductor, malleable, corrosion resistant