Chemistry Practicals Flashcards
Sweet fruity smell
- Ester
Yellow or blue non-sooty flame
- Aliphatic compound with low carbon content
Yellow sooty flame
- Aromatic compound of high carbon content
Organic compound miscible in water
- Polar aliphatic compound of low molecular mass
Organic compound partially/ sparingly miscible in water
- Polar aliphatic compound of high molecular mass
Organic compound immiscible in water
- Non-Polar organic compound of low molecular mass
Organic compound turned damp blue litmus paper red
- Acidic organic compound
Organic compound turned damp red litmus paper blue
- Basic organic compound
Organic compound had no effect on red or blue litmus paper
- Neutral organic compound
Organic compound dissolved in dilute sodium hydroxide without effervescence
- Carboxylic acid
- Phenol
Organic compound formed bubbles of a gas with sodium carbonate or sodium hydrogen carbonate solution
Carboxylic acid
Organic compound formed a yellow precipitate with 2,4-dinitrophenylhydrazine
- Carbonyl compound
Organic compound formed a sweet fruity smell when added to ethanoic acid in presence of concentrated sulphuric acid
Ester formed; alcohol present
Organic compound formed a sweet fruity smell when added to ethanol in presence of concentrated sulphuric acid
Ester formed; carboxylic acid present
Organic compound formed a purple solution with neutral iron(iii) chloride solution
Phenol
Organic compound formed a brown precipitate with neutral iron(iii) chloride solution
- Benzoic acid
- carboxylic acid
Organic compound formed a white precipitate with sodium hydroxide solution and silver nitrate solution
Chloroalkane
Organic compound formed a cream precipitate with sodium hydroxide solution and silver nitrate solution
Bromoalkane
Organic compound formed a yellow precipitate with sodium hydroxide solution and silver nitrate solution
Iodoalkane
Organic compound turned a brown solution of bromine water colourless
Unsaturated compound eg
alkyne, alkene
- Organic compound turned a brown solution of bromine water to a white precipitate
Unsaturated compound
eg Aromatic amine, phenol
Organic compound turned a purple solution of potassium permanganate to a colourless solution
(Reducing agent)
- Primary alcohol
- Secondary Alcohol
- Aldehyde
- Methanoic acid
Organic compound turned an orange solution of potassium dichromate solution to a green solution
- Primary alcohol
- Secondary Alcohol
- Aldehyde
- Methanoic acid
Organic compound formed a silver mirror with ammoniacal silver nitrate solution
- Aldehyde
- Methanoic acid
(It is a mild oxidizing agent)
Organic compound formed a reddish brown precipitate with Fehling’s solution/ ammoniacal copper(I) chloride
- Aldehyde (except benzaldehyde)
- Methanoic acid
(It is a mild oxidizing agent)
- Organic compound formed a white precipitate/ colourless crystals with sodium hydrogen sulphite
- Methyl ketone
- Aldehyde (other than methanal and ethanal)
Organic compound formed a cloudy solution immediately with anhydrous zinc chloride and concentrated hydrochloric acid solution (Lucas’ reagent)
Tertiary alcohol
Organic compound formed a cloudy solution in 7 minutes with anhydrous zinc chloride and concentrated hydrochloric acid solution (Lucas’ reagent)
Secondary alcohol
Organic compound; no cloudy solution with anhydrous zinc chloride and concentrated hydrochloric acid solution (Lucas’ reagent)
Primary alcohol
Organic compound formed yellow precipitate with iodine and sodium hydroxide solution
- Secondary alcohol with the structure
- Ethanol (only primary alcohol with the structure)
- Ketone with the structure
- Ethanal (only aldehyde with the structure)
Crystalline compound
- Sulphates
- Nitrates
- Chlorides
- Oxalates
- Sulphite
- Ethanoate
Powdery compound
- Carbonates
- Oxides
White solid, colourless solution
Non-transition element ions
- Zinc
- Aluminum
- Lead
- Tin
- Ammonium
- Calcium
- Barium
- Magnesium
Black solid
- Oxide
- Sulphide
Of a transition metal
Green solid, green solution
- Chromium ions
- Iron(ii) ions
- Copper(ii) ions
- Nickel(ii) ions
Blue solid, blue solution
- Copper(ii) ions
Yellow solid, yellow solution
- Chromium(vi) ions from chromate ions
- Iron(iii) ions
Orange solid, orange solution
- Chromium(vi) ions from dichromate ions
Pale pink, not visible in solution
Manganese(ii) ions
Brown solid, brown solution
Iron(iii) ions
Pale violet solid, pale violet solution
Chromium(iii) ions
Red or pink solid, solution
- Cobalt(ii) ions
- Manganese(ii) ions
White to reddish brown residue on heating which turned yellow on cooling
- PbO formed, Pb2+ present
White to yellow residue when hot, turned yellow on cooling
ZnO formed, Zn2+ formed