Liquids have a definite volume, and they take the shape of their containers. Gases do not have a definite shape nor a definite volume. When a gas is heated to many thousands of degrees, it is called "Plasma" a fourth phase of matter. Plasma is common throughout the universe, and the stars contains plasma..
Properties shown by some kinds of matter but not by others are special properties like elasticity, malleability, ductility, viscosity, surface tension etc. All matter occupy space and possess mass and inertia.
Matter and Materials
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Matter exists in several phases. If we look at all objects around us, we perceive that some materials have a definite shape and occupy a definite amount of space or volume. We call these materials solids and we can name many objects that are solids. We say that solids have a definite shape and a definite volume.
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