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Why is AlBr3 soluble in water?
For any soluble substance, the ions of that substance have a stronger attraction for water molecules than they do for each other.
Is top water a substance or mixture?
Top water typically refers to the water found at the surface of a body of water, such as a lake or ocean. It is a substance, as it consists of molecules of H2O and does not contain any other substances mixed in.
Is coke is mixture or a pure substances?
Coke is a pure substance. It is primarily composed of carbon atoms and does not contain any other types of atoms or molecules.
Why gases highly compressible than solid?
In a gas, the molecules are free to move around and are relatively far apart from each other, so you can compress the gas and move the molecules closer to one another. In a solid, the molecules are already touching and so can't be moved any closer to each other.
Whats the difference between adhesion and cohesion?
Adhesion is the attraction between two molecules of different substances.cohesion is the attraction between molecules of the same substances.
Why is AlBr3 soluble in water?
For any soluble substance, the ions of that substance have a stronger attraction for water molecules than they do for each other.
Why does an egg expand when heated?
Any substance expands when heated. The molecules become more active and push against each other with greater force, thus increasing the distance between them.
What is the substance missing in a vacuum?
In a vacuum, the substance missing is air or any other gas. A vacuum is a space devoid of matter, including gas molecules, which results in very low pressure.
Is top water a substance or mixture?
Top water typically refers to the water found at the surface of a body of water, such as a lake or ocean. It is a substance, as it consists of molecules of H2O and does not contain any other substances mixed in.
What is he freedom of movement in molecules in a substance called?
The kinetic theory of molecules gives the idea about the movement and the behavior of the molecules in any different phase. The chemical reactivity of a particular molecule can be identified on the basis of kinetic theory of molecules. The phase of molecules changes and so changes it entropy ( movement of molecule in available space)
What happens to the molecules of a substance when it is charring?
Normally, when substance burns, the molecules undergo a rapid oxidation, which excites the molecules greatly. The heat that is input into the substance, and the oxidation process, causes the molecules to move around very quickly. As the molecules return to their lower energy resting state, they shed the excess energy in the form of heat. When the goal is to char, instead of burn, the molecules are exposed to the same heat as for burning, but they are denied oxygen. Since the materials do not have access to oxygen, they do not burn (rapidly oxidize). All of the molecules still get excited, and move and bump into each other, but the fuel is not consumed, as that requires oxygen. Once the molecules of the substance get hot enough, any molecules of water or other liquids change state to a gas and are driven out of the substance being heated, because of the expansion of the gas. Charring is most commonly used to dry wood completely, without using up the wood's potential energy as fuel.
What is the meaning of polymer?
Any one of two or more substances related to each other by polymerism; specifically, a substance produced from another substance by chemical polymerization.
What affects the half life?
The half-life of a substance is affected by factors such as the rate of decay of the substance's atoms or molecules, the physical or chemical environment in which the substance is located, and any interactions with other substances that may affect the decay process.
How does intermolecular forces of a substance determine the phase the substance is in?
The strength of the intermolecular forces will determine what phase the substance is in at any given temperature and pressure. Consider the halogens for example, fluorine and chlorine are gases, while bromine is a liquid and iodine is a solid at room temperature. When considering the intermolecular forces present, each of these substances only has London forces, which increase in magnitude with increasing size of the molecules, and size increases as you go down a group in the periodic table. So, fluorine has the smallest intermolecular forces, and iodine has the largest. This explains why these different substances exist in different phases when at room temperature and pressure. The molecules in fluorine, for example, are only slightly attracted to each other, and therefore the substance exists as a gas. The stronger intermolecular forces in bromine, however, hold the molecules close to each other, but not quite strongly enough to prevent the molecules from sliding past each other; this makes bromine a liquid. Finally, in iodine, the intermolecular forces are actually strong enough that the molecules are held in fixed positions relative to each other, thus making iodine a solid.
Is coke is mixture or a pure substances?
Coke is a pure substance. It is primarily composed of carbon atoms and does not contain any other types of atoms or molecules.
What is the diffrence between osmosis and diffusion?
Diffusion is the spreading of a substance in another substance effected by the thermal movements of the molecules or other forces acting between the molecules. The spreading happens from an area with high density into areas with originally lower density. For osmosis to occur you must have a solvent in two rooms separated by a membran that lets the solvent molecules pass. In one of the rooms there is a dissolved substance that cannot pass the membrane in a higher concentration than in the other room. This makes solvent pass over to the room with the highest concentration of the substance so that the pressure gets higher in that room and the solution gets less concentrated. The process stops when the pressure is high enough or the concentration of the dissolved substance is equal in both rooms. The mechanism behind osmosis is as follows: The solvent molecules are always moving because of their termal kinetic energy and are steadily colliding with each other and also with molecules of the dissolved substance. All the time some solvent molecules pass through the membran between the two rooms also, and in both directions. But the dissolved substance will all the time collide with some of the solvent molecules and block their passage through the membran. Solvent molecules in the room with most dissolved substance will however be blocked more often from passing than solvent molecules in the other room. Thus there will be most passings from the room with the least dissolved substance.
Why gases highly compressible than solid?
In a gas, the molecules are free to move around and are relatively far apart from each other, so you can compress the gas and move the molecules closer to one another. In a solid, the molecules are already touching and so can't be moved any closer to each other.
