A mixture is when two or more substances are joint together but can also be physically separated from each other. i.e mixtures are not chemically joint together

Examples of mixtures are…

salt+water=salt water solution

You can separate the salt water solution  by making the water evaporate

here is a experiment for you to try out

first you need to get a bow

then put 100g of water into it

then add 20g of salt

mix it up

Then it will turn into salt water solution

you will need to leave it on your sill window for the water to evaporate then the salt will turn into crystals form.