Question

1. what property of the filter prevents collecting the salt?

the size of the filter pores versus the size of the salt grain
the weight of the filter
the color of the filter
the material the filter is made out of

1. is it convenient/practical to use distillation in order to get fresh water?

yes
no

Explanation:

1. Filtration works based on particle size. If the filter pores are larger than the salt grains, salt will pass through. Weight, color, and material (unless related to pore - size indirectly) do not directly prevent salt collection in the context of filtration principles.
2. Distillation to get fresh water is not practical for large - scale, everyday use due to high energy consumption, slow process (for large volumes), and the need for specialized equipment.

Answer:

1. The size of the filter pores versus the size of the salt grain
2. no