Squid belong to the class of mollusks known as cephalopods, which includes octopuses, cuttlefish, and nautiluses. Most squid have eight arms and two long feeding tentacles, which feed into a central mouth armed with a sharp, parrot-like beak.quid belong to the class of mollusks known as cephalopods, which includes octopuses, cuttlefish, and nautiluses. Most squid have eight arms and two long feeding tentacles, which feed into a central mouth armed with a sharp, parrot-like beak.
Matter is a substance that has inertia and occupies physical space. According to modern physics, matter consists of various types of particles, each with mass and size. The most familiar examples of material particles are the electron, the proton and the neutron. Combinations of these particles form atom s.
Matter is a word that is sometimes used in varying ways in everyday life, whereas mass is a well-defined concept and quantity at least in physics. They are not the same thing, though they are related. Ordinary matter is made of tiny particles called atoms. The atoms have spaces between them and they move or vibrate all the time. The particles move faster and move further apart when heated, and the reverse when cooled.