0620 Unit1 Questions

7/23/2019 0620 Unit1 Questions

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Core 1

w w w . X t r e m

e P a p e r s . c



Alternative to Practical 1









Extension 1



Extension 2



Chemical Analysis & Techniques page 1

Core 1

a(i) (Liebig) condenser

(ii) 99

(iii) limonene floats on water / on top of the water




Alternat ive to Practical 1

a C = buretteD = pipette

b five points from theseknown volume of / pipette oven cleaner into flask / beaker named acidin buretteuse of indicator note volume of acid to neutralise oven cleaner repeat with other oven cleaner





a colour – redpH 1-3

c whiteprecipitate

d fizz / effervescence / bubbleslimewater gives a milky / white precipitate

f chlorine

g carbon dioxide

h zinc





a A – Bunsen burner B – TripodC – Gauze

D – Crucible

b indication of burning, light / flame / glowwhite smoke / ash




Extension 1

i fuel or making esters or antiseptic or ethanoic acid or vinegar or thermometers

ii does not dissolve or does not contain dyes

iii two of theseto develop it or locating agentsamples are colourlessto make them visible

iv any two of theseonly one spotsame position or Rf valuecompare with glucose




Extension 2

a heat green crystalsadd water to yellow powder goes green

b weigh solutionevaporate to drynessweigh (solid)solution – solid is water or mass of water / mass of solution * 100

c bubbleslimewater goes cloudy

add sodium hydroxidewhite precipitate

add aqueous ammonia

no precipitate or faint one

or flame test with red / orange / brick red flame

d any four of theseindicator titrationfind volume of sodium hydroxide to neutraliseif volumes the same then HYif twice volume of alkali then H2Y

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0620 Unit1 Questions