EOY 1 Flashcards
State the definition of a base
A base neutralises an acid.
State the definition of an alkali
Chemical opposite of an acid, feels more soapy
What is the name of the reaction between an acid and a a base?
Neutralisation reaction
A concentrated solution of an acid is _ corrosive then a dilute solution.
more
Acids taste _
sour
What does an indicator do?
It shows if a solution is acid or alkaline, it contains a dye which shows a different colour code.
What’s the difference between litmus indicator and Universal indicator?
Litmus indicator - paper that turns blue for alkali, red for acid
Universal indicator - Solution that changes the colour, purple for alkali, red for acid
What is the neutral PH number?
7
What is the most acidic number and the most alkaline?
acidic = 1 alkali = 14
What happens to the PH in a neutralisation reaction?
The PH gets closer to 7
Finish the sentence
A base _ acids
neutralises
What forms when an acid reacts with a metal element or compound?
Salt
Salt definition
A compound that forms when an acid reacts with a metal element or compound
