The chemical formula of a molecule contains the chemical symbols of each element with a subscript to the right of each that indicates how many atoms of that element are present. Although the chemical formula indicates the type and number of atoms included, the order that they are bonded in is not indicated.
When a molecule is created in the simulation, click on the green box labeled 3D to view a model of the molecule. Either Space Filling or Ball and Stick can be selected. Use the PhET simulation to build each molecule based on the chemical formula, then view in three dimensions to help determine the order that they are bonded. Match each of the given chemical formulas to the appropriate models.
Drag the appropriate labels to their respective targets.
Although the smallest representative unit of an element is the atom, most matter occurs in nature as molecules or ions. Molecules are composed of multiple atoms connected together by bonds.
Click on the image to explore this simulation and build your own molecules from the given kits. When you click this simulation link, you may be asked whether to run, open, or save the file. Choose to run or open it.
When the simulation, select Make Molecules from the main page. When Make Molecules is selected you should see Kit #1 with a bin labeled 'Hydrogen" and a bin labeled "Oxygen." The atoms in the bin can be dragged to the area above and bonded to another atom by moving them adjacent to one another. The completed molecule can then be dragged to the collection area to the right. Clicking on the yellow arrow next to Kit #1 will switch to another kit. Clicking Collect Multiple brings up a similar window but the goal here is to create multiple copies of each molecule. Clicking Larger Molecules brings up a similar window but larger molecules can be created and more atoms are available.
Frequently Asked Questions
What scientific concept do you need to know in order to solve this problem?
Our tutors have indicated that to solve this problem you will need to apply the Molecular Models concept. If you need more Molecular Models practice, you can also practice Molecular Models practice problems.