Kinetic theory is a description of the properties of atomic particles in different states such as solids, liquids and gases. In different states, atoms have a different energy level and particle movements also include distance. Say no to plagiarism. Get a tailor-made essay on “Why Violent Video Games Should Not Be Banned”? Get an original essay The state of the sample, for example water, can be changed by the change in temperature. This is because energy is applied to the atoms, causing the changes. Observations such as volume, temperature and pressure can be measured. Atoms become stronger to break apart when they are close together because they have intermolecular forces of attraction. Atoms in the solid state are restricted and have no space to move freely. In the solid state, more energy is required to break the intermolecular force because the atoms are close together and the attraction is strong enough to be in a fixed position. Since there is no space between the particles, they cannot be compressed, meaning they cannot become smaller than they currently are. The particles have no space to move, so if energy is applied, it must start small. So, if energy is applied due to restricted space, atoms start vibrating next to their neighbors in the same regular position. For the state to change, more energy is required, which means the temperature must be increased. The vibration of the atoms becomes stronger as thermal energy is transferred into kinetic energy which breaks down the structure of the atoms. The solid begins to change shape into a liquid called melting as the intermolecular forces break down and weaken. Depending on the solidified substance, the reaction speed varies, for example. The atoms in the liquid state can now move freely while bumping against each other within the volume of the container due to the increased kinetic energy. The intermolecular force is weaker than the previous state but still holds the atoms together in the liquid substance. In the liquid state it can be compressed by decreasing the energy as they are not closely bonded compared to the solidified state. If the liquid state decreases in temperature and becomes solid, the reaction is called freezing. This is when the particles lose energy, meaning they will stop moving and be in a stable arrangement. As the temperature drops, it loses energy and the intermolecular force attracts the atoms together. Before the gas appears, evaporation of the liquid begins. This is when different atoms have different energy levels and are able to escape from the liquid solution/container to form a gas, for example water, which evaporates into the air. The molecules have enough energy to break down the intermolecular between them. During evaporation, heat is constantly supplied as heat (high energy molecules) is released from the liquid, meaning the liquid cools. Evaporation occurs at the surface of the liquid and can depend on the substance and the situation. For example, if the surface area of ​​the liquid substance is large, the rate of evaporation increases as the probability of particles escaping is greater. Keep in mind: this is just a sample. Get a personalized article from our expert writers now. Get a personalized essay. atoms in the gas state move completely freely without any restrictions, which means that their distance from.