Metals And NonMetals

Question 1

Corision

Answer 1

Corrosion is an undesirable (unwanted) process whereby a metal changes to its oxide or some other compound by combining with oxygen from the air.

Question 2

Rusting

Answer 2

Is the corrosion of Fe ( Iron )

Question 3

When metals react with an acid

Answer 3

Hydrogen gas is given off

Question 4

Zinc reacts with hydrochloric acid

Answer 4

to form zinc chloride and hydrogen

Question 5

Metals

Answer 5

Are usually hard , dense , shiny and have high melting points

Question 6

Mallebale

Answer 6

Meams can be hammered into different shapes

Question 7

Ductile

Answer 7

Means can be stretched into wires

Question 8

Unreactive metals

Answer 8

(E.g gold and silver ) can be found in nature

Question 9

Rusting needs

Answer 9

Water and oxygen

Question 10

Corrosion is prevented using …

Answer 10

Paint , grease , galvanising , chrome plating

Question 11

Galvanising

Answer 11

Is putting a layer of zinc on iron to prevent rusting

Question 12

Bronze

Answer 12

Copper and tin

Question 13

Brass

Answer 13

Copper and zinc

Question 14

Steel

Answer 14

Iron and carbon

Question 15

Solder

Answer 15

Lead and tin

Question 16

Cats make zebras cry

Answer 16

Reactivity series in order : Calcium , magnesium, zinc , copper

Question 17

Periodic table

Answer 17

Left side of stairs = metals

Right side of stairs = nonmetals

Question 18

Alloy

Answer 18

Alloy is a mixture of metals