Daɣ medium wa s isassaɣraw taɣelit hullan d awa fal ijja awen
Eɣaf izlay s data daɣ solid tan fal as molecule tan n medium oɣadnen aqqalan a ojjaran daɣ molecule tan n liquid meɣ gaz, awen eɣaf id eɣaf Iɣewan ən taɣelit tajan dǎɣ tazoli ogaran 17 ən azaman fal adu.