)The purpose of this short discussion is to prepare learners for the section about pressure. To read the article of this research, you can request a copy directly from the author. A harmonic, We study the ground state properties, potential energy curves and potential energy surfaces of the superheavy nucleus ²⁷⁰Hs by using the multidimensionally-constrained relativistic mean-field model with the effective interaction PC-PK1. Stir it to 'mix' the oil and the water and then allow them to separate out again into the different layers. As the particles whizz around, they bump and bounce off each other. This introduces some concepts to be dealt with in the later grades. When the balloon contains as many particles as it possibly can, it will be stretched to its maximum size. (5 letters), 11. You can just feel how heavy they are in your hand. They can work in groups to do this. Use the same amount of each liquid. 7 workbook, you can look at what they did. Bring cooking oil to class and demonstrate this by pouring some oil into a glass of water. The drawing on the right is of the same thermometer, but slightly different. Take note to make sure you do not introduce this misconception. This causes an increase in pressure. Which state has the highest density: solid (in container A), liquid (in container B) or gas (in container C)? This evaporation will happen much faster outside, in the sunshine, than inside. Notice how the yellow liquid swirls and spreads out as the yellow particles mix with the colourless particles. The two separate layers of water and oil are referred to as 'phases', the oil phase and the water phase. Have you ever tried to compress the gas in a syringe or in a bicycle pump? How long did it take until the first learners smelled the vanilla essence molecules? It is the random movement of the particles that allow liquid and gaseous substances to diffuse. The binding energy, size and shape as well as single particle shell structure corresponding to the ground state of this nucleus are obtained. If there are more particles, there will be more collisions, and that means the pressure will be greater. They will need to know the volume of the cups to do this. When a solid is heated to reach its melting point, it will change into a liquid. More collisions means increased pressure! Now that we have a better idea of the behaviour of particles in the different states of matter, we are ready to look at how particles behave when matter changes its state. Arrange students to work in pairs. (It is actually not possible to measure the mass of air when it is surrounded by more air. How long did it take until the last learners smelled the vanilla essence? Tie a knot in the top of an inflated balloon. (4 letters), 2. A gas will fill the entire space that is available to it. All Siyavula textbook content made available on this site is released under the terms of a Water, is specifically not mentioned in this activity, as it is an exception which will be discussed later. Air is a gas and water is a liquid. These extremely small particles are called atoms or molecules, depending on the type of material. The particles (which are now in the liquid state) will whizz around faster and faster as they heat up.

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