In this module, you will learn:

  • the properties of acids and alkalis
  • some examples of acids and alkali you can find in the laboratory

Resources to help you:

  • Textbook: page 113, 114, 115 and 116
  • Notebook: page 29 and 30

Watch the video

Learn the properties of acids and alkalis

Source: https://www.youtube.com/watch?v=1eePYyq2a6U

You can change the speed to 0.75x to make it easier to listen.

The different properties of acids and alkalis

ACIDS


  1. Acids are corrosive.
  2. Acids taste sour.
  3. Acids turn blue litmus paper red.


ALKALI


  1. Alkalis are corrosive.
  2. Alkalis taste bitter.
  3. Alkalis turn red litmus paper blue.
  4. Alkalis have a soapy feel.

Watch the video

See how acids are corrosive

Source: https://www.youtube.com/watch?v=dM7Qq-SBSmQ

You can change the speed to 0.75x to make it easier to listen.

Some common examples

ACIDS


  • hydrochloric acid
  • sulphuric acid
  • nitric acid
  • ethanoic acid
  • acetic acid
  • citrus acid

ALKALI


  • potassium hydroxide
  • sodium hydroxide
  • calcium hydroxide
  • magnesium hydroxide
  • ammonia

Watch the video

Learn about using the litmus paper to find out if items around your house is acidic or alkali

Source: https://www.youtube.com/watch?v=YrNBAq8x-2c

You can change the speed to 0.75x to make it easier to listen.

Ready for the next module?

In the next module, we will look at indicators to find the pH values.

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