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Flashcards in Patterns of Reactivity Deck (18):
1

What might make sodium metal expensive?

it takes a lot of heat and electricity to extract sodium from sodium chloride .

2

what’s the product of metal and oxygen?

metal oxide

3

what happens when you burn copper?

copper turns black

4

what happens when you burn iron?

produce orange sparks

5

what happens when you burn magnesium?

emits bright white light

6

how do alkaline metal react with water?

reacts vigorously
gives off gas
moves across water
metal disappears

7

group 1 reaction word equation?

metal + water = metal hydroxide + hydrogen

8

word equation for metal and acid?

metal + acid = salt + hydrogen

9

which metals are explosive in acid?

Potassium , Sodium and Lithium

10

list metals in reactivity

Potassium Peter
Sodium Said
Calcium Carefully
Magnesium My
Aluminium Annoying
Zinc Zebra
Iron In
Lead. London
Copper. Can
Silver. Smell
Gold. Grotty

11

why is aluminium not very reactive?

it has an oxide layer

12

why build ships out of steel?

it is strong and cheap

13

what does rust do to steel?

make it flaky and weak

14

what is silica gel used for?

to absorb moisture

15

word equation for rust?

iron + water + oxygen = hydrated iron (iii) oxide

16

how do we prevent rust on ship?

paint it

17

what is stainless steel and does it rust?

steel and chromium and it doesn’t rust

18

what is galvanising ?

coating metal with more reactive metal