Chemistry

Question 1

Corrosion

Answer 1

Is an undesirable (unwanted) process whereby a metal change

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 hydrochloride acid

Answer 4

To form zinc chlorides hydrogen

Question 5

Metals

Answer 5

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

Question 6

Malleable

Answer 6

Means can be hammed into different shapes

Question 7

Ductile

Answer 7

Means can be stretched into wires

Question 8

Unreactive metals

Answer 8

(Gold,silver) can be found in nature

Question 9

Rusting needs

Answer 9

Water and oxygen

Question 10

Corrosion

Answer 10

Paint,

Question 11

Galvanising

Answer 11

Is putting a layer of zinc on iron to prevent rushing

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 older:calcium,magnesium,zinc,copper

Question 17

Periodic table

Answer 17

left side of stairs=metals,right side=non metals

Question 18

Alloy

Answer 18

Is a mixture of metals

Question 19

Crystal lattice

Answer 19

This is what an ionic structure is called

Question 20

Single covenant bonds

Answer 20

Occurs when times share one pair of electrons

Question 21

Double covenant bond

Answer 21

Is formed when atoms share two pairs of electrons

Question 22

Crystal lattice

Answer 22

This is what an ionic structure is called

Question 23

Single covenant bonds

Answer 23

Occurs when times share one pair of electrons

Question 24

Double covenant bond

Answer 24

Is formed when atoms share two pairs of electrons