8b. Reactions of acids Flashcards
What is meant by neutralising an acid?
Increasing the pH value towards 7
Why is neutralisation important?
Because acidic conditions can sometimes cause problems
Give some examples of neutralisation in everyday life.
Adding lime to soil
Washing hair with shampoo
Brushing teeth with toothpaste
Taking antacids for indigestion
Adding baking soda to bee stings
Definition of a “base”
A substance that neutralises an acid
What are the 3 categories of bases?
Metal oxides
Metal carbonates
Metal hydroxides
Definition of a “salt”
a product formed when the H+ (aq) ions of an acid are replaced by +ve metal ions
What are the salts that form from 3 lab acids?
What are the products when metal oxides react with acids?
A salt plus water
What is the reaction that happens when oxides react with acids?
Metal oxides and acids experiment
Acid is heated to increase reaction rate
Excess oxide is removed by filtration
Fltration apparatus
What are the products when metal carbonates react with acids?
A salt plus carbon dioxide plus water
What are the products when metal hydroxides react with water
A salt plus water
What is the reaction when carbonates react with acids?
