Extension

Challenge yourself further by reading through:

• Elements, compounds and mixtures¹

• Pure and impure substances².

Start a new page in your document from Task 2.

1. Pick four substances from the following list:

   • toothpaste
   • sand
   • jellybeans
   • ice cream
   • marshmallows
   • olive oil
   • talcum powder
   • hair gel
   • mayonnaise
   • ooblek (yes, it's a real thing)

2. For each substance, find at least one picture and answer the following questions:

   1. How do you think the particles of the substance are arranged?
   2. Is the substance a solid, liquid or gas?

3. Share your answers with a classmate and think about the answers they gave. Do you agree?