Neutralisation Reactions

Complete the word equation below:

Acid + alkali --> ............... + water

• water

• salt

• gold

• metal

Why is toothpaste alkaline?

• It can neutralise strong alkaline in

  your mouth

• It can neutralise acid in

  your mouth

• It can refresh your teeth

• Toothpaste is not alkaline.

Pure water has a pH of 7. Pure water _______.

• is a base
• is a neutral substance
• could be either an acid or a base
• is an acid

What colour is Universal indicator when the solution is neutral?

• Red

• Green

• Blue

• Purple

What type of reaction occurs when you react an acid with an alkali?

• combustion

• decomposition

• no reaction

• neutralisation

ph range of acids are .....

• 0-6

• 7

• 8-14

• 4-10

ph range of alkalis are .....

• 0-6

• 7

• 8-14

• 4-10

nitric acid + iron hydroxide -> iron nitrate + ..........

• hydrogen

• hydroxide

• oxygen

• water

What colour change would you see if you added nitric acid to sodium hydroxide and universal indicator?

• red -> blue

• purple -> green

• red -> yellow

• pink -> colourless

iron chloride, sodium nitrate, lithium sulphate, copper carbonate are all examples of .........

• acids

• alkalis

• salts

• mixtures