Chemistry of the Elements Flashcards Preview

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Flashcards in Chemistry of the Elements Deck (44):
1

sulphate ion

2-
SO4

2

nitrate ion

-
NO3

3

hydroxide ion

-
OH

4

ammonium ion

+
NH4

5

hydrogen carbonate ion

-
HCO3

6

hydrochloric acid

HCL

7

sulphuric acid

H2SO4

8

nitric acid

HNO3

9

hydrogen peroxide

H202

10

ammonia

NH3

11

carbonic acid

H2CO3

12

For the halide ion test, what must you add to a halide to get an insoluble precipitate?

silver nitrate

13

what colour precipitate do you get when adding silver nitrate to a chlorine ion?

white precipitate

14

what colour precipitate do you get when adding silver nitrate to a bromine ion?

cream precipitate

15

what colour precipitate do you get when adding silver nitrate to an iodine ion?

yellow precipitate

16

in a flame test, what colour flame would sodium give?

orange

17

in a flame test, what colour flame would copper give?

green-blue

18

in a flame test, what colour flame would potassium give?

lilac

19

in a flame test, what colour flame would calcium give?

brick-red

20

in a flame test, what colour flame would lithium give?

red

21

in a flame test, what colour flame would barium give?

pale green

22

describe the test for chlorine

any indicator paper gets bleached if positive

23

describe the test for hydrogen

wen exposed to a flame, a test tube of hydrogen gives a squeaky pop

24

describe the test for carbon dioxide

when combined with lime water, turns milky

25

carbonate ion

2-
CO3

26

what colour flame would magnesium have?

white

27

what colour flame would sulfur have?

blue

28

describe the color change from copper carbonate to copper oxide

green-->black

29

describe the properties of CO2

colour less
odorless
slightly soluble than water
denser than air

30

how is carbon dioxide used in fire extinguishers

the dense gas sinks onto the flames and prevents oxygen from combining with them

31

Carbon dioxide + water --> ?

carbonic acid - H2CO3

32

sulfur dioxide + water --> ?

sulfurous acid - H2SO3

33

describe the reaction of water with magnesium

- vigorous reaction
- mixture gets hot
- colour less solution formed

34

describe the reaction of aluminum with dilute acid

- slow at first but after warming reacts vigorously
- due to protective layer of aluminum oxide on the surface

35

describe the reaction of dilute acid with zinc

- slow but more rapid with heating

36

describe the reaction of iron with dilute acids

- slow but more rapid with heating

37

describe a chemical test for water

water present in a mixture will turn anhydrous copper sulphate from white to blue

38

list the reactivity series from most to least reactive

Potassium Provoking
Sodium Seductive
Lithium Language
Calcium Can
Magnesium Manipulate
Aluminum Anyone
Carbon Careful
Zinc Zapping
Iron Induces
Hydrogen Heated
Copper Conversations
Silver Stay
Gold Guarded

39

what can be used to prevent the rusting of iron

paint
oil
grade
plastic

aka the barrier method

40

describe galvanizing iron

metals more reactive than iron can be used as sacrificial metals as they react instead of it

galvanizing iron - coating iron with a layer of zinc

41

if you get a blue precipitate upon adding NaOH to x, what is x?

Cu2+

42

if you get a red/brown precipitate upon adding NaOH to x, what is x?

Fe3+

43

if you get a green precipitate that slowly turns brown upon adding NaOH to x, what is x?

Fe2+

44

if your product is warm, smells of ammonia, and turns red litmus paper blue, what did you add NaOH to?

NH4+