Science simulation, Probeware, Coding
Lower the temperature to precipitate some of the substances as a solid, then filter them through filter paper. Recrystallization Recrystallization is a method of separating and purifying a substance by using the property that the amount … more
Distillation Distillation is a common method used to separate liquid mixtures based on differences in their boiling points. When a liquid mixture is heated, the component with the lower boiling point vaporizes first. The vapor is … more
Solubility When salt dissolves in water, a clear solution is formed. This is because the solute, salt, breaks down into particles so small that they are invisible to the naked eye and mixes evenly with the … more
Type an element symbol to pop the bubbles. Type one of the element symbols shown on the right. Use the Backspace ⌫ key to delete a mistyped character. The list of element symbols that appear … more
Characteristics of Gases Unlike solids and liquids, gases have the following unique characteristics: 1. They have no definite shape or volume Gas particles move in all directions and can fill any part of a container. Therefore, … more
Boyle’s J-tube experiment Boyle’s J-tube experiment is an experiment that Boyle did to prove his law. Boyle experimented with pouring mercury into a J-shaped glass tube with one side blocked. At first, the heights of mercury … more
Kinetic theory model Gas particles are constantly moving in all directions. However, we cannot observe these gases because they are very small. The “Kinetic theory model” can replace these invisible gas particles with beads and make … more
Boiling point and properties of substances All water boils at 100°C when heated, even if it has a different mass. In this way, the same kind of substance has the same boiling point regardless of quantity. … more
All atomic models showed only the electrons in the outermost shell. All chemical bonds are depicted as planar, but in reality, they can have three-dimensional structures. ‘In case of unstable, display in red’ may contain an … more
* You can move ion particles with the mouse. Movement of Ion particles Ions acquire electric charge by gaining or losing valence electrons, depending on the type of atom. Electric forces act between charged substances. A … more
The ideal gas equation is a formula that expresses the law of the relationship between pressure, volume, number, and temperature of ideal gases. With this simple equation, you can calculate the remaining variables you don’t know. … more
This simulation supports multitouch. Nature of gas Since the gas can not be seen or touched, a little imagination is needed to understand the ‘nature of the gas.’ In most everyday life, people often do not … more