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Flashcards in Chemistry 2 Deck (28):
1

which metals can rust

only iron, rusting is what corrosion is called for iron, for other metals it is just corrosion

2

What is stainless steel

An alloy of iron and Nickel which resists corrosion, it is use for making cutlery

3

What sort of reaction is rusting

Oxidation

4

Name three allotropes of carbon

Graphite, Graphene, diamond, fullerenes

5

What is corrosion

chemical reactions between metals and substances in the enviroment which damages the metal

6

Name two alloys of copper

Bronze and Brass

7

what is corrosion of iron called

Rusting

8

What is steel

An alloy of iron and carbon

9

What was phase 1 of the earth's atmosphere

Lots of volcanoes, producing steam and carbon dioxide, atmosphere almost all carbon dioxide, then the earth cooled and the vapour condensed to form oceans

10

Name three barrier methods to present rust

Paint, Oil or grease, plastic coating

11

What is graphene used for

Electronics and it can be added to other materials to give them stength (composites)

12

What are fullerenes

molecues of carbon attoms which hollow shapes

13

Name uses for Bronze

Statues and ships propellers

14

Name two allotropes of Carbon have dissasociated electrons

Graphite and Graphene

15

name two types of steel

High carbon Steel (0.22-2.5% carbon) and low carbon steel (0.1-0.3% carbon)

16

What two features of a metal are affected by corrosion

strenth and appearance

17

what is the word equation for rusting

IRON + WATER + OXYGEN --> HYDRATED ITON (III) OXIDE

18

Is 18 catar gold an alloy

Yes it is an alloy og Gold and Copper

19

Name two uses for brass

Imusical instruments and taps

20

What was the first fullerene to be discovered

Buckminsterfullerene (C60)

21

what are the two methods to prevent rust

barrier and sacraficial protection

22

What was phase 2 of the earth's atmosphere

plants and algae grow in the oceans, converted carbon dioxide to Oxygen (photosynthesis), Nitrogen produced by bacteria, plants move to the lans Oxggen levels increase

23

Does NaCL (aq) (i.e. salt water) act as a catalyst for rusting

Yes

24

Why is there a lot og Nitorgen in the atmosphere

Because it is unreactive so it just collects over time

25

What needs to be present for Iron to Rust

Water and Oxygen

26

What was phase 3 of the earth's atmosphere

Oxygen built up allowing complex organisma to evolve, the oxygen created the ozone layer which blocks harmful UV rays, almost no carbon dioxide left

27

name three metals which can be used to sacraficially protect iron

Zinc, Magnesium, Aluminium

28

How does sacraficial protection for rusting work

A more reactive metal is placed near the iron and gets oxidised instead