Observations Flashcards
What do you write when you see no evidence of a reaction occurring
No observable reaction
What do you write when you see a solid
The colour and whether it’s texture (powdered, ash, metallic, crystalline or gelatinous)
What do you write when you get a solution
The colour
What is a solute
A liquid where a solute is dissolved in a solvent
What do you write when you get a precipitate
The colour
When does a precipitate occur
When the mixing of aqueous solutions leads to the formation of an insoluble substance
What do you write when you get an immiscible
A description of both upper and lower layers
What is an immiscible
Liquids which do not mix, separated at an interface
What do you write when you get a miscible
The colour
What do you get when you see an endothermic/exothermic reaction
Whether the temperature rises or drops (as there’s usually a temp change) and the repeat the procedure and write down the initial and final temperature
What do you write when you see fumes/vapour evolve
The colour, whether the fumes are dense (cloudy) or not (misty), check for condensation (or formation of solid) on the side and then describe it
What is effervescence
Bubbles of gas moving through a liquid
What do you write if you see effervescence
The colour
What is suspension
Small solid particles are suspended in liquids or gas
What do you write when you see suspension
Whether the suspension clears on standing
