It is odorless, colorless, inert monatomic gas when under standard condition. Neon is the second of the rare gases to be discovered.

The atoms in a gas spread in all directions. They are free and can move in all directions. The gas molecules expands to fill the available space. Hence, they can change shape and volume. The gas atoms being in a molecular state moves fast in high speed to break away from each other, to remain in a free state.

Which statement best describes the atoms in a gas? They move freely in all directions. Sample Response: The windsurfer, his board, and the air and water around him are all made of matter. That matter is made up of very small particles called atoms, which cannot be divided.

In gases the particles move rapidly in all directions, frequently colliding with each other and the side of the container. With an increase in temperature, the particles gain kinetic energy and move faster. In liquids, particles are quite close together and move with random motion throughout the container.

Brownian motion, also called Brownian movement, any of various physical phenomena in which some quantity is constantly undergoing small, random fluctuations. It was named for the Scottish botanist Robert Brown, the first to study such fluctuations (1827).

Explanation: The rate of effusion for a gas is inversely proportional to the square-root of its molecular mass (Graham’s Law). The gas with the lowest molecular weight will effuse the fastest. The lightest, and therefore fastest, gas is helium.

Chlorine is the slowest.

The motion of the particles is increased by raising the temperature. Conversely, the motion of the particles is reduced by lowering the temperature, until, at the absolute zero (0 K), the motion of the particles ceases altogether. Because the particles are in motion, they will have kinetic energy.

The molecules in hot air are moving faster than the molecules in cold air. Because of this, the molecules in hot air tend to be further apart on average, giving hot air a lower density. That means, for the same volume of air, hot air has fewer molecules and so it weighs less.

For example, when the pressure increases then the temperature also increases. When the pressure decreases, then the temperature decreases. Because there is less mass in the can with a constant volume, the pressure will decrease. This pressure decrease in the can results in a temperature decrease.

Temperature causes water molecules to move more quickly, because each individual molecule has more energy as it gets hotter (according to Kinetic molecular theory). If you get water hot enough, the molecules move so much that the hydrogen bonds that hold them together start to break and the water becomes a gas …

Water, like air, is a fluid that can carry heat as it moves from one place to another. Meteorologists have different terms for horizontal and vertical movement of fluids: movement in the vertical direction driven by buoyancy is called convection, and movement in the horizontal direction is called advection.

100 °C

As heat is added to a liquid, the molecules move faster and faster until they break free of the liquid and become a gas. Sample answer: Liquid water molecules move faster and faster until they break free of the liquid. Temperature: 100 °C C. Water is cooled to the freezing point.

Matter changes between the liquid and gas states through vaporization and condensation. The change from a liquid to a gas is known as vaporization (vay puh ruh ZAY shun). You can see in Figure 11 that the temperature of the substance does not change during vaporization. However, the substance absorbs thermal energy.

An increase in the speed of the molecules competes with the attraction between molecules and causes molecules to move a little further apart. Cooling a liquid decreases the speed of the molecules. A decrease in the speed of the molecules allows the attractions between molecules to bring them a little closer together.

Explanation: Atoms lose energy as a gas changes to a solid. Atoms gain energy as a solid changes to a liquid. If atoms energy during a change of state, they are pulled together by attractive forces and become more organized.

Atoms lose energy when they change from solid to liquid or gas and quid to gas.

Answer Expert Verified. Atoms overcome the attractive forces between them through vaporization and sublimation. In vaporization, the atoms are from gas to liquid while in sublimation, it is from solid to gas which skips liquid state.

Answer: Statement-1 : Change in internal energy in the melting process is due to change in internal potential energy. Statement-2 : This is because in melting, distance between molecules increases but temperature remains constant.

Therefore, in order for matter to change from a solid to a liquid or from a liquid to a gas, particles of matter must absorb energy. In order for matter to change from a gas to a liquid or from a liquid to a solid, particles of matter must lose energy.

In the given model, gaseous or vapor state is transformed into a solid state and this phase change occurs in case of deposition. Therefore deposition is shown in the given model.

The correct answer would be that atoms gain energy during evaporation and boiling.

Matter rarely changes state. A gas changes directly to a solid by freezing. The process to change from a gas to a liquid is called condensation.

Explanation: Physical properties can be observed without changing the identity of the substance.

How is energy related to the change of state represented by the model? Atoms gain energy as a solid changes to a liquid. If atoms energy during a change of state, they are pulled together by attractive forces and become more organized.

The answer is: Sublimation.

Deposition is the phase transition in which gas transforms into solid without passing through the liquid phase. Deposition is a thermodynamic process.

In sublimation process, atoms gain energy and their state of the matter changes from solid directly to gas.