Watch the video about states of matter. If you wanted to, and it was safe to do so, you could try them at home but ASK AN ADULT TO HELP YOU. Please do not use a cooker by yourself. It is dangerous.
Alternatively, why not carry out your own investigation? Use an ice cube tray to investigate the freezing point of liquids. Put different liquids into each compartment of the ice cube tray E.G Cola, water, oil. Which one will freeze the fastest?
If you already have some ice cubes, place them in different places to see which one melts the fastest (remember to put them in a dish or on a plate though!). Try putting them on the windowsill, in the garden or in the fridge. Predict what will happen when you begin and see if you are right at the end.