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What does neutral mean?
Neutral means neither acidic nor alkaline.
What colour does universal indicator show at pH?
Green(pH7)
What pH range shows strong acids?
pH 1 - 3
What colour shows a strong alkali?
Purple or dark blue
What does universal indicator do?
It shows the pH of a solution by changing colour
What colour shows a weak acid?
Yellow or orange
Is water acidic , alkaline or neutral
What type of changes is neutralisation?
A chemical change
What is formed in a neutralisation reaction?
Salt and water
Hydrochloric acid + sodium hydroxide--------> ________________+ water
Sodium chloride
Metal + acid -------------> salt + ---------------?
Hydrogen gas
Zinc+ sulfuric acid ------------> _______________ + hydrogen gas
Zinc sulfate
What piece of equipment add acid very accurately?
A burette
What safety equipment should be worn?
Safety glasses( goggle)
Give one example of neutralisation in daily life?
Antacids neutralise stomach acid
Why is neutralisation useful in real life?
To make harmful substances safe
