Table 14.1 - Densities of Some Common Substances SolidsĪs you can see by examining Table 14. The basic physics concept I hope almost every one might be aware of i.e ' water tend to expand instead of freezing just below and above 4 degree celsius '. Plasma will not be discussed in depth in this chapter because plasma has very different properties from the three other common phases of matter, discussed in this chapter, due to the strong electrical forces between the charges. At high temperatures, molecules may disassociate into atoms, and atoms disassociate into electrons (with negative charges) and protons (with positive charges), forming a plasma. Why is density of water maximum at 4 degree celsius We were having a discussion to this question in class and I could gather the following points. There exists one other phase of matter, plasma, which exists at very high temperatures. In this chapter, we generally refer to both gases and liquids simply as fluids, making a distinction between them only when they behave differently. When placed in an open container, gases, unlike liquids, will escape. This makes gases relatively easy to compress and allows them to flow (which makes them fluids). Step 3: pour a one-quarter cup of coconut oil on top of. We will need a tall glass cup, honey, water, coconut oil and food colouring, Step 1: Pour a one-quarter cup of honey, Step 2: Pour a one-quarter cup of coloured water gently on top of the honey. In contrast, atoms in gases are separated by large distances, and the forces between atoms in a gas are therefore very weak, except when the atoms collide with one another. To understand the density of water, let’s do a small experiment. Because the atoms are closely packed, liquids, like solids, resist compression an extremely large force is necessary to change the volume of a liquid. When a liquid is placed in a container with no lid, it remains in the container. That is, liquids flow (so they are a type of fluid), with the molecules held together by mutual attraction. ![]() This occurs because the atoms or molecules in a liquid are free to slide about and change neighbors. ![]() Liquids deform easily when stressed and do not spring back to their original shape once a force is removed. A gas must be held in a closed container to prevent it from expanding freely and escaping. Explanation: Density of water based on temperature (in C) equation is: At 4C, density 1000(1 4 +288.9414 508929(4 + 68.129630)(4 3.9863)2) density 999.9999985 1000kg m3. (c) Atoms in a gas move about freely and are separated by large distances. Forces between the atoms strongly resist attempts to compress the atoms. (b) Atoms in a liquid are also in close contact but can slide over one another. \): (a) Atoms in a solid are always in close contact with neighboring atoms, held in place by forces represented here by springs.
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