Science Simulations
Formation and energy of the ionic bonds Metal atoms have strong properties to lose electrons and become cations. On the contrary, non-metallic atoms have strong properties to obtain electrons and become anions. As these two particles … more
Where did the pendulum’s energy go? A pendulum that vibrates in the air continues to collide with air molecules in the process of vibrating. Air molecules get their energy from the pendulum. In this process, Air … more
Dissolving Dissolving means that the solute diffuses into the solvent and mixes. It is a common case that salt or sugar is dissolved in water. Solvents are often liquid, mostly water. The Earth’s atmosphere is a … more
The air conditioner The air conditioner is based on ‘evaporative heat'(a phenomenon that absorbs the surrounding heat when the liquid evaporates). The indoor unit suddenly expands the compressed refrigerant through a narrow hole. Then, the refrigerant … more
What is Covalent Bond? The covalent bond is a bond formed by atoms. Each atom creates an electron pair and shares it. Because each other’s electrons are shared in pairs, the number of electrons involved in … more
Looking through the VR device, you can observe the 3-dimensional molecular bonding structure of ice.
Press the ‘C’ button to add carbon, press the ‘H’ button to add a hydrogen atom, and press the ‘O’ button to add an oxygen atom. The added atoms are randomly placed and may not give … more
Surface tension Surface tension is a type of force that acts to minimize the surface of liquids. Liquid molecules are pulling together with other molecules around them. This force is called a ‘cohesive force.’ On the … more
Paraffin, the main ingredient of candles Paraffin, the main ingredient of candles, is alkane hydrocarbons in which 20 to 40 carbon atoms are linked in a chain. It does not dissolve in water as a polar … more
Charle’s Law Assuming constant pressure, increasing the temperature of the gas will speed up the molecular motion. As the gas often collides with the vessel wall, the volume increases. Conversely, if you lower the temperature of … more
Boyle’s Law If you press the piston of a syringe containing a certain number of gas molecules, the gas molecules’ space is reduced. Therefore, the gas molecules collide with the syringe wall more and more. As … more
