USES OF METALS

Question 1

THE USES OF IRON, ALUMINIUM AND COPPER DEPENDS ON THEIR (…)

Answer 1

PROPERTIES

Question 2

PROIPERTIES OF IRON

Answer 2

-WROUGHT IRON IS ALMOST COMPLETELY PURE IRON
-ITS MALLEABLE SO ITS USED TO MAKE GATES AND RAILLINGS
-THE MAIN PROBLKEM WITH IRON IS THAT IS CORRODES EASILY

Question 3

PROPERTIES OF ALUMINIUM

Answer 3

-DOESNT CORRODE EASILY
-IT REACTSD VERY QUICKLY WITH OXYGEN IN THE AIR TO FORM ALUMINIUM OXODE
-A NICE PROTECTIVE LAYER OF ALUMINIUM OXIDE ON TOP OF ALUMINIUM ITSELF STOPS ANY REACTION TAKING PLACE
-BECAUSEZ IT DOESNT CORRODE IT IS USEFUL FOR PRODUCTS THAT COME IN CONTACT WITH WATER (DRINK CANS)
-ALUMINIUM IS MUCH LESS DENSE THAN IROIN, WHICH MAKES IT LIGHTER (USEFUL WHEN THE WEIGHT OF THE METAL IS IMPORTANT) SUCH AS IN BICYCLE FRAME AND AEROPLANES

Question 4

PROPERTIES OF COPPER

Answer 4

-GOOD CONDUCTOR OF HEAT AND ELECTRICITY
-USED IN ELECTRICAL COMPONENTS AND WIRING AS IT HAS LOW RESISTANCE AND SO IS EFFICIENT AT TRANSFERRING ELECTRICITY
-IT IS ALSO USED IN HEATING SYSTEMS (UNDERFLOOR HEATING) AS IT ALLOWS SPEEDY TRANSFER OF HEAT TO THE SURROUNDINGS

Question 5

HOW ARE ALLOYS MADE

Answer 5

BY ADDING OTHER ELEMENTS TO THE METAL (USUALLY OTHER METALS OR CARBON)

Question 6

ALLOYS OF IRON ARE CALLED (…)

Answer 6

STEELS

Question 7

HOW ARE STELS MADE

Answer 7

BY ADDING SMALL AMOUNTS OF CARBON AND SOMETIMES OTHER METALS TO IRON