acids & bases

Cards (14)

what are the two ions water splits into?
Hydrogen and hydroxide
what is an acidic solution?
An acid is a substance which contains more H+ than OH- ions.
what is an alkali solution?
A base or alkali is a substance which contains more OH– ions than H+ ions.
hat happens to an acid when its diluted?
When an acid is diluted, the acidity decreases and the pH rises towards 7
what happens to an alkali when it’s diluted?
When an alkali is diluted, the alkalinity decreases and the pH falls towards 7
what happens when a non metal is dissolved in water?
A non-metal oxide will form an acidic solution when dissolved in wat
what happens when a metal is dissolved in water?
A metal oxide will form an alkaline solution when dissolved in water.
what is a spectator ion?
A spectator ion is one which does NOT change during a reaction
what is a neutralisation reaction?
the reaction between an acid and a base
what is a precipitation reaction?
A reaction in which a solid forms from the mixing of two aqueous solutions.
what does concordant mean?
within 0.2 of each other
what is an indicator used for in a titration?
An indicator needs to be used in order to show when the end-point has been reached.
what is a white tile used for in a titration?
to see colour change easily
what are the three stages of salt preparation
1 - preperation
2 - evaporation
3 - filtration