Gases If the particles of a substance have enough energy to completely overcome intermolecular interactions, then the particles can separate from each other and move about randomly in space. A solid has definite volume and shape, a liquid has a definite volume but no definite shape, and a gas has neither a definite volume nor shape.
This state has a definite volume. This state has no definite shape. This state allows the individual particles to move about while remaining in contact. Solution This statement describes either the liquid state or the solid state. This statement describes either the liquid state or the gas state. This statement describes the liquid state. This state has individual particles in a fixed position with regard to each other. This state has individual particles far apart from each other in space.
This state has a definite shape. Answer a. Looking Closer: Water, the Most Important Liquid Earth is the only known body in our solar system that has liquid water existing freely on its surface.
Key Takeaway Solids and liquids are phases that have their own unique properties. Concept Review Exercise How do the strengths of intermolecular interactions in solids and liquids differ? Answer Solids have stronger intermolecular interactions than liquids do. Exercises What are the general properties of solids? What phase or phases have a definite volume?
What phase or phases do not have a definite volume? Name a common substance that forms an amorphous solid in its solid state. Answers hard, specific volume and shape, high density, cannot be compressed. Substances with weak intermolecular interactions are likely to be liquids at lower temperatures. Objective Type Questions. The molecules can vibrate but do not move around which keeps the shape and volume definite.
The molecules can move around and the forces of attraction between molecules is less as compared to solids, so the liquid takes the shape of the container and volume is definite. The force of attraction between molecules is also very less, as a result gases acquire any shape or any volume.
Book a free class. Book a free class Join class now already booked a class? Allied solutions. Book a free class now. Matter and its Composition Exercise. Matter and its Composition 2. Physical and Chemical Changes 3. Elements, Compounds and Mixtures 4. Mercury has a relatively high surface tension, which makes it very unique. Here you see mercury in its common liquid form. Gases have the following characteristics:. Solids are defined by the following characteristics:.
As you can see in the video, mercury can be solidified when its temperature is brought to its freezing point. However, when returned to room temperature conditions, mercury does not exist in solid state for long, and returns back to its more common liquid form.
Use the web site to answer the following questions:. Skip to main content. Matter and Change. Search for:. Explain differences among these three phases of matter. Figure 2. Summary Three states of matter exist — solid, liquid, and gas. Solids have a definite shape and volume.
0コメント