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What colour would a strong acid appear with univeral indicator and what pH does it have?
Red , pH 1-2
What colour would a strong alkali appear with univeral indicator and what pH does it have?
Purple pH 13-14
What colour would a neutral substance appear with univeral indicator and what pH does it have?
Green, pH 7
What ions do acids and alkalis contain?
Acids: H+ (Hydrogen ions)
Alkalis: OH- (Hydroxide ions)
What is made when an acid reacts with a metal?
A salt and hydrogen
What would you see when an acid reacts with a carbonate?
Fizzing because carbon dioxide is made
What is made when an acid reacts with a base?
A salt and water
What is the ionic equation for neutralisation?
H+ + OH- → H2O
How would you test to identify sulfate ions?
Add barium chloride, a white precipitate should be seen