Water Analysis Part 1 Flashcards
What is the effect on earth of water being an excellent solvent of ionic substances?
Much salt is found in the oceans
What is the effect on earth of water having a high heat capacity?
Water stabilises the Earth’s temperatures
What is the effect on earth of water having a high surface tension?
Some insects can be observed to walk on water
What is the effect on earth of water not mixing with non-polar liquids?
Oil floats on water
What is the effect on earth of water expanding on freezing?
Ice floats on water
What is the effect on earth of water being very abundant?
Water covers most of the planet Earth
What is an example of a weak acid?
Citric acid
Where on the pH scale would a more acidic solution be found?
Closer to 1
Do acids react with metals to produce carbon dioxide?
No carbon dioxide is produced
Which concentrated solution would give a deep purple/blue colour with universal indicator solution?
Potassium hydroxide
What is the relationship between hydroxides and pH?
Hydroxides are of a high pH
What is the chemical name of the anion which will react with an acid to produce a gas and turn limewater milky?
Carbonate CO3^2-
What does a solution that mixes with aluminium powder and sodium hydroxide to emit a strong ammonia smell contain?
Nitrate
What are some examples of sources of turbidity?
Sewage treatment effluent, soil erosion material, industrial waste and urban runoff
What is a reason that river nitrate levels will rise from June to October?
Plants have reduced growth in winter and do not uptake nitrate in their roots
