?£["ECM", "Puhas apelsinimahl", "Mida tähendab sõna puhas apelsinimahla pakil?", "pure substances and mixtures", "pure orange juice"]#["ECM", "Milline aine on puhas?", "Milline on sinu seisukoht?", "pure substances and mixtures", "what does pure mean?"]#["ECM", "Ehe kuld", "Kas ehe kuld on puhas?", "pure substances and mixtures", "pure gold"]#["ECM", "Ehe ja lisanditega kuld?", "Kumb neist on puhas aine?", "elements", "pure and impure gold"]#["ECM", "Vee omadused", "Puhta vee omadused.", "pure substances and mixtures", "the properties of water"]#["ECM", "Soolalahuse keemispunkt", "Soolalahuste keemistemperatuur on erinev ja sõltub lahustunud soola hulgast.", "pure substances and mixtures", "the boiling points of salty water"]#["ECM", "Kolm soolalahust", "Ka soolalahuste tihedused on erinevad ja sõltuvad lahustunud soola hulgast.", "pure substances and mixtures", "three samples of salty water"]#["ECM", "Naftaleeni proov", "Toatemperatuuril on naftaleen tahke aine.", "cooling curve of naphthalene", "sample of naphthalene"]#["ECM", "Sulanud naftaleen", "Keeva veega keeduklaasis naftaleen sulab.", "cooling curve of naphthalene", "melted naphthalene"]#["ECM", "Naftaleeni jahtumine", "Jätame sulanud naftaleeni jahtuma ja jälgime temperatuuri muutumist.", "cooling curve of naphthalene", "naphthalene, 0 secs"]#["ECM", "Temperatuur katse alguses (t=0s)", "Proovi temperatuur on katse alguses 86 kraadi C. ", "cooling curve of naphthalene", "thermometer, 0 secs"]#["ECM", "t = 30 s", "Poole minuti pärast on temperatuur langenud 83 kraadini C.", "cooling curve of naphthalene", "thermometer, 30 secs"]#["ECM", "t = 1 min 30 s", "Ootame veel minuti ja temperatuur on 81 kraadi C.", "cooling curve of naphthalene", "thermometer, 1 min 30 secs"]#["ECM", "t = 2 min 30 s", "Nüüd on temperatuur 79 kraadi C.", "cooling curve of naphthalene", "thermometer, 2 mins 30 secs"]#["ECM", "t = 3 min", "Temperatuur enam ei lange. Samal ajal ilmuvad tahke naftaleeni kristallid.", "cooling curve of naphthalene", "thermometer, 3 mins"]#["ECM", "t = 13 min", "Nüüd on 11 minuti jooksul  temperatuur jäänud samaks ja kogu naftaleen on  muutunud tahkeks.", "cooling curve of naphthalene", "naphthalene, 13 mins"]#["ECM", "t = 17 min", "Tahkeks muutunud naftaleen jahtub.", "cooling curve of naphthalene", "naphthalene, 17 mins"]#["ECM", "Kas see on kuld?", "Puhta kulla sulamistemperatuur on 1065 kraadi C ja tihedus on 19.3 g/cm3. ", "pure substances and mixtures", "is it gold?"]#["ECM", "Kas need ained on puhtad?", "Millised neist  on puhtad ained?", "pure substances and mixtures", "are these substances pure?"]#