Acids and metals Flashcards
What colour does thymolphthalein have in an acid?
Its colourless.
What colour is thymolphtalein in neutral solution?
Its colourless.
What colour does phenolphthalein have in a base?
Its blue.
What colour does litmus have in a neutral solution?
It is purple.
What colour does litmus have in an acid solution?
Its red.
What colour does litmus have in base?
Its blue.
What colour does methyl orange have in an acid?
Red.
What colour does methyl orange have in a neutral colour?
It is orange.
What colour does methyl orange have in a base?
Its yellow.
What is an acid?
An acid is a solution that dissolves in water and produces H+ aqueous ions.
What does corrosive mean?
A corrosive substance is a substance that can dissolve another substance or ‘eat it away.’.
What is an indicator?
A substance that changes colour in an acid or base, for example, thymolphthalein, methyl orange, and litmus paper, or pH indicator.
What is the common element in acids and what do acids do?
The common element in acids is hydrogen and acids all conduct electricity.
What ions do acids form when they dissolve in water?
H⁺ ions.
Do alkalis conduct electricity?
Yes, they conduct electricity.
