Chemistry GCSE - The Atmosphere, Water purity 0.0 / 5 ? ChemistryThe earth and its atmosphereGCSEAQA Created by: #GeekyNerdCreated on: 21-02-16 16:26 How much nitrogen and oxygen is in the air? 78% is nitrogen and 21% is oxygen! 1 of 7 Other gases in our atmosphere include.... Argon and Carbon Dioxide. 2 of 7 How can you separate oxygen and nitrogen? You liquefy the air and then Fractional distillation of air can be used. 3 of 7 How can you measure the amount of oxygen in the air? Gas syringes and by passing a known volume of air over hot copper and measuring the decrease in volume. 4 of 7 How can you test water purity? By evaporating the water in an evaporating dish or by measuring the waters boiling point. 5 of 7 How do you purify water? Filtration, Sedimentation, Chlorination.... 6 of 7 Name three types of water pollutants.... Nitrate fertilisers, lead pipes, pesticides. 7 of 7
Comments
No comments have yet been made