End of topic test 1 year 10 Flashcards
do alkalis or acids have a high pH
Alkalis have a high pH Acids have a low pH
If the solution is neutral what is the pH and what colour will it go
pH 7 it will go green
what is the definition of an acid
a solution with a pH of 6 or lower
what is the definition of a base
a pH of greater than 7 indicates a base insoluble in water
what is an acid
a solution with a pH of 6 or lower
what is an alkali
a solution with a pH of 8 or higher
what is an indicator
Any substance that gives a visible sign, usually by a colour change
the pH scale goes from what number to what number and what colour
pH 1 to 14 and red to violet
if it is pH 3-4 what colour will the solution be
orange
if it is pH 5-6 what colour will the solution be
yellow
what does a word equation tell us
tells us what products are formed from what reactants
what is neutralisation
a reaction in which acidity or alkalinity is removed
in an ionic equation all compounds that are (aq) are written as what
Ions
Oxidisation is the loss or gain of electrons
the loss of electrons
Reduction is the gain or loss of electrons
the gain
