Dictionary Flashcards
Acidic meaning
Sour & corrosive.
Ph <7
Alkaline definition
Slippery & soapy
Ph >7
What does neutral mean?
Neither acidic nor alkaline
What does PH mean?
Number that describes how acidic something is
What is the PH scale?
Colour scale showing colours of PH indicator in different PH
What is PH indicator?
Dye that changes colour in different PH
What is Universal indicator?
PH indicator that turns red/orange/yellow in acids.
Green/blue/purple in alkalis
What is concentration?
The amount of particles dissolved in a liquid
What does dilution mean?
Adding water to a solution
Base meaning
Substance which neutralises an acid
Meaning of a soluble?
Dissolves in water
What is an alkali?
A soluble base
What does neutralisation mean?
Reaction between acid & base which produces a salt and water
Salt
Compound made during neutralisation.
Made when hydrogen in acid is replaced by metal
Parent acid?
Acid used to make salt
What is a parent base?
Base used to make a salt
Antacid
Medicine used to treat indigestion
Evaporation definition
Removing solvent by heating a solution
What is acid rain
Rain with a lower PH than normal
What does ocean acidification mean?
Process of ocean water becoming more acidic over time
Solvent meaning
Able to dissolve other substances
