WHAT IS MATTER?

Every thingthat surrouns us is made up of matter. The air, animals, rocks, plants every thing.We cout define matter as all that occupies a space and can be weighed. Even gases wich are very light, can be weighedif we weigh and inflated balloon we can see that it weighs slightly more than an un. inflated balloon. When we are studing matter we use sam basic quantities such as length, surface, area, volume, mass, density or temperature. So that we are all using the same units in science we use what is called the internationalsystem of units.
DIMENSIONS: Length (L) is the distance betteen two bodies.In (SI) units this is mesured in meters(M) we also use centimeter(CM) or kilometers (KM) we use rulers, measuring tapes and so on when we are measuring length (L).
SURFACE AREA (S): Is the space occupied by two dimensions length (L) and width. In (SI) units we measure surface area in square meters (M2) and other very common unit is square centimeters (CM2).
VOLUME (V): Is total space ocupied by a body. It is often measured in litres even in the (SI) unit in the cubic meter (M3) the volume of liquids or solids can be measured using measuring cylinders in the case of regular geometric chapes we can use mathematical formules for example:the volume of a sphere with radius is Vsphere =4/3 valius of PI R3.