Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

chemistry > acids alkali bases > Flashcards

acids alkali bases Flashcards

1
Q

UI

A

red - acid
green
purple - alkali
range of colours - quantitive

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

methyl orange

A

red - acid
orange
yellow - alkali

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

phenolphthalein

A

colourless - acid / neutral

pink - alkali

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

red litmus paper

A

blue in alkali

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

blue litmus paper

A

red in acid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

acid definition

A

proton donor

releases H+ ions in water

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

ethanoic acid

A

CH3COOH

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

phosphoric acid

A

H3PO4

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

strong acid

A

fully ionise
higher concentration of H+
eg hydrochloric

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

weak acid

A

partially ionises
lower concentration of H+
eg ethanoic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

base definition

A

proton acceptor

neutralises acids

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

alkali definition

A

soluble bases

substance which releases OH- ions when in water

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

common alkalis (4)

A

NaOH
KOH
Ca(OH)2
NH3

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

ionic equation for neutralisation

A

H+ + OH- > H2O

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

acid + metal

A

salt + hydrogen
effervescence + solid disappears
REDOX

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

acid + metal carbonate

A

salt + water + CO2
solid disappears + effervescence
NEUTRALISATION

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

acid + metal oxide

A

salt + water
solid disappears
NEUTRALISATION

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

acid + metal hydroxide

A

salt + water
solid disappears
NEUTRALISATION

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

acid + ammonia

A

ammoniUM salt

NEUTRALISATION

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

all acid reactions

A

make salts

exothermic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

hydrogen test

A

lit splint

squeaky pop

22
Q

don’t react K Li Na

A

too reactive + dangerous

23
Q

don’t react Cu Ag Au

A

unreactive

less reactive than hydrogen

24
Q

test HCl gas with blue litmus

A

DAMP to make HCl dissolve to make HCl (aq)

acid - red

25
hydrated salts
salts containing water of crystallisation evaporate 2/3 of water leave to cool/crystallise filter + dry
26
anhydrous salt
heat to dryness | no water of crystallisation
27
anhydrous salt test for water
anhydrous copper sulphate + water | goes from white to blue
28
sodium solubility
soluble
29
potassium solubility
soluble
30
ammonium solubility
soluble
31
acids solubility
soluble
32
bases solubility
insoluble (hydroxides oxides + carbonates) | except sodium… potassium… ammonium… ammonia calcium hydroxide
33
nitrates solubility
soluble
34
chloride solubility
soluble | except silver and lead
35
sulphates solubility
soluble | except barium calcium + lead
36
making insoluble salts (5) | - precipitate
``` MIX 2 solutions STIR FILTER precipitate WASH - distilled water DRY - filter paper ```
37
why wash precipitate
distilled contains no other compounds that can react | to make it pure and remove solution
38
soluble salt methods (3)
acid + metal acid + insoluble base acid + soluble base (titration)
39
soluble salt - acid + metal/insoluble base
``` WARM acid add XS base/metal FILTER off xs to obtain filtrate HEAT filtrate to evaporate 2/3 of the water (saturated) COOL/CRYSTALLISE solution FILTER off water DRY between filter paper ```
40
why warm acid
speed up reaction
41
how to tell its in XS
solid stops disappearing(all acid reacts)
42
test for saturation
glass rod | crystals form in end
43
making anhydrous salt
once you have soluble salt solution heat to dryness not saturation
44
why use volumetric pippette
very acurate
45
why use burette
measure precisely | and add acid slowly / gradually
46
why run acid through burette
fills to end of tap
47
why swirl
mix round acid evenly
48
concentration
no. moles of solute in 1dm^3 of solvent | no. moles/volume
49
dm^3
cm^3/1000
50
soluble salt - acid + soluble base (alkali) 13
- add alkali to conical flask (VOLUMETRIC PIPETTE) - add INDICATOR - fill BURETTE with acid (record initial volume) - let some acid out (fill the jet) - add acid drop by drop + SWIRL - till indicator changes colour - record final volume and subtract initial to find amount of acid added - repeat till CONCORDANT values - AVERAGE concordant values and add average amount to alkali (no indicator) - HEAT (evaporate 2/3 of water) till saturated - COOL/CRYSTALLISE solution - FILTER to obtain crystals - DRY between filter paper
51
concordant results
two results within 0.1cm^3

chemistry (17 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions