How do strong and weak acids differ? Use lab tools on your computer to find out! Dip the paper or the probe into solution to measure the pH, or put in the electrodes to measure the conductivity. Then see how concentration and strength affect pH.
Online labs provide your students with the possibility to conduct scientific experiments in an online environment. Remotely-operated labs (remote labs) offer an opportunity to experiment with real equipment from remote locations. Virtual labs simulate the scientific equipment. Data sets present data from already performed lab experiments. Please use the filters on the right to find appropriate online labs for your class. Labs can be combined with dedicated Apps to create Inquiry Learning Spaces (ILSs).
If you are looking for online labs especially suitable for the curricula of Benin, Kenya or Nigeria, please visit our Collections page.
Build an atom out of protons, neutrons, and electrons, and see how the element, charge, and mass change. Then play a game to test your ideas!
How do you know if a chemical equation is balanced? What can you change to balance an equation? Play a game to test your ideas!
Primary aims of the lab:
Bond (from bonding in chemistry) helps students learn about solubility and precipitation of salts. Bond contains a database with thousands of salts and the most common ions, with information about solubility and colours. The setup is similar to what students would do in a real chemistry lab.
Test the pH of things like coffee, spit, and soap to determine whether each is acidic, basic, or neutral. Visualize the relative number of hydroxide ions and hydronium ions in solution. Switch between logarithmic and linear scales.
Explore what happens at the molecular level during a phase change. The three common physical states of matter (also called phases) are solid, liquid and gas. Matter can change phase with the addition or subtraction of heat. Molecules are always in motion.
Why does a balloon stick to your sweater? Rub a balloon on a sweater, then let go of the balloon and it flies over and sticks to the sweater. View the charges in the sweater, balloons, and the wall.
Atomic orbitals are mathematical functions that describe the properties of electrons in atoms.Using this lab, you will learn how to build atomic orbitals according to the general principals involved and you will also be able to visualize their shapes.
Our objective is to study the variation of cell potential of Zn│Zn2+ ││Cu2+│Cu cell with change in the concentration of electrolytes (CuSO4 and ZnSO4) at room temperature. Students understand the terms, electrochemical cell, electrolytic cell, Daniell cell, salt bridge, EMF.
Create your own sandwich and then see how many sandwiches you can make with different amounts of ingredients. Do the same with chemical reactions. See how many products you can make with different amounts of reactants.
The primary aims of the lab are:
Methyl orange is an orange, azoic dye and is used as pH-indicator, with a transition range from 3.1 to 4.4, as well as for dyeing and printing textiles. In this remote lab students can examine the synthesis of methyl orange.
What determines the concentration of a solution? Learn about the relationships between moles, liters, and molarity by adjusting the amount of solute and solution volume. Change solutes to compare different chemical compounds in water.
Explore pressure under and above water. See how pressure changes as you change fluids, gravity, container shapes, and volume. Primary aims of the lab:Investigate how pressure changes in air and water.Discover how you can change pressure.
Kinetic Molecular Theory describes the behaviour of tiny gas particles, which are too small to be seen even with the strongest microscope. Kinetic means "motion," so the theory is all about particles moving!
The Gas Laws bring together temperature, volume and pressure and help us to see how these factors are related.
Test the pH of things like coffee, spit, and soap to determine whether each is acidic, basic, or neutral. Visualize the relative number of hydroxide ions and hydronium ions in solution. Switch between logarithmic and linear scales.
Phase Changes are changes of state, such as the change from liquid to gas, solid to liquid, or gas to liquid. When we heat particles, why are they able to change their state?
Diffusion describes how particles of matter move through other liquids and gases (including air). Diffusion explains how the mass of particles and temperature are related to how quickly particles spread out over an area.
The NAAP Hydrogen Energy Levels Lab introduces the concept of how quantum mechanics and light relate with respect to the Hydrogen atom. The Energy Levels simulator allows dynamic interaction with a Bohr model version of a single Hydrogen atom.
"The thicker the glass, the darker the brew, the less the light that passes through." Make colorful concentrated and dilute solutions and explore how much light they absorb and transmit using a virtual spectrophotometer!Primary aims:
Do you ever wonder how a greenhouse gas affects the climate, or why the ozone layer is important? Use the sim to explore how light interacts with molecules in our atmosphere.
This lab will help you learn how to build inorganic molecules. You will also be able to investigate the nature of the bonds between the atoms and how are electrons placed.
Watch your solution change color as you mix chemicals with water. Then check molarity with the concentration meter. What are all the ways you can change the concentration of your solution?
Explore molecule shapes by building molecules in 3D! Find out how a molecule's shape changes as you add atoms to a molecule.The primary aims of the lab are:1) Recognize that molecule shape is due to repulsions between atoms
With this lab you will find out how separation of mixtures is done using the following techniques:
Separating funnel
Chromatography
Centrifugation
Simple distillation
Fractional distillation
Using the GoLab Molecule Builder you can explore the properties and nature of 20 different organic molecules.
When is a molecule polar? Change the electronegativity of atoms in a molecule to see how it affects polarity. See how the molecule behaves in an electric field. Change the bond angle to see how shape affects polarity.Sample Learning Goals
How does solar radiation interact with the Earth and its atmosphere to cause global warming? Use this lab to see what’s going on at the molecular level.
Investigate the relationship between the volume of a gas and the pressure it exerts on its container. This relationship is commonly known as Boyle's Law. The pressure of a gas tends to decrease as the volume of the gas increases.
Primary aims of the Lab:
Phase Changes are changes of state, such as the change from liquid to gas, solid to liquid, or gas to liquid. When we heat particles, why are they able to change their state?
While all molecules are attracted to each other, some attractions are stronger than others. Non-polar molecules are attracted through a London dispersion attraction; polar molecules are attracted through both the London dispersion force and the stronger dipole-dipole attraction.
Explore pressure at the atomic level. All matter is made up of atoms, which make up molecules. These atoms and molecules are always in motion. When atoms and molecules are contained, we can measure the amount of pressure they exert on the container.
In this lab, our objective is to study the shift of equilibrium between ferric ions and thiocyanate ions by increasing the concentration of either of them.
Explore the interactions that cause water and oil to separate from a mixture. Oil is a non-polar molecule, while water is a polar molecule. While all molecules are attracted to each other, some attractions are stronger than others.
Explore the relationship between the temperature of a gas and its volume. This is commonly known as Charles's Law. The volume of a gas tends to increase as the temperature increases.
Primary aims of the Lab:
1) To learn about Charles's Law
Despite the “bond” name, hydrogen bonds are a special type of dipole-dipole interaction.
Explore molecule shapes by building molecules in 3D! How does molecule shape change with different numbers of bonds and electron pairs? Find out by adding single, double or triple bonds and lone pairs to the central atom. Then, compare the model to real molecules!
Kinetic Molecular Theory describes the behavior of tiny gas particles, which are too small to be seen even with the strongest microscope. Kinetic means "motion," so the theory is all about particles moving!
This lab presents the spectrum of eletormagnetic radiation in terms of wavelength and frequency.
Mass spectrometers distinguish the chemical makeup of a sample by displaying the ratios of the different masses of particles within the sample. This applet is used to learn how mass spectrometry differentiates between different isotopes of an element.
An interactive whiteboard activity where students build an atom by dragging electrons, neutrons and protons onto the template. The element information box shows if they are correct. The animation can also be used to show how ions form.
Explore the role of temperature in the rate of diffusion of a substance. Diffusion is the process of a substance spreading out from its origin. Molecules diffuse through random molecular motion.
Explore the relationship between the temperature of a gas and the pressure it exerts on its container. This is commonly known as Gay-Lussac's Law or Amontons' Law of Pressure-Temperature. As the temperature of a gas increases, the pressure it exerts on its container will increase.
While all molecules are attracted to each other, some attractions are stronger than others. Non-polar molecules are attracted through a London dispersion attraction; polar molecules are attracted through both the London dispersion force and the stronger dipole-dipole attraction.
The Stereo Molecule Viewer Project, Molecules are drawn in a 3d environment, can be projected in 3d using a geowall. The applet can also rotate, zoom, translate, and measure many parts of the molecule.
Explore the structure of a gas at the molecular level. Molecules are always in motion. Molecules in a gas move quickly. All molecules are attracted to each other. Molecules can be weakly or strongly attracted to each other.
This animation illustrates the absorption of infrared radiation by CO2 in the troposphere and the collisional loss of this absorbed energy to surrounding N2 and O2 molecules. In this animation the user can sweep through a region of the IR spectrum and excite some of the vibrational modes of CO2.
The three common physical states of matter are solid, liquid and gas. All matter is made up of atoms, which make up molecules. Atoms and molecules can be weakly or strongly attracted to each other.
Explore the role of temperature in the rate of diffusion of a substance. Diffusion is the process of a substance spreading out from its origin. Molecules diffuse through random molecular motion.
Explore different types of attractions between molecules. While all molecules are attracted to each other, some attractions are stronger than others.
This lab allows you to perform experiments that will help you understand the properties of acids and bases.
Investigate the difference in attractive force between polar and non-polar molecules by “pulling” apart pairs of molecules. While all molecules are attracted to each other, some attractions are stronger than others.
Convert between pH values and concentration of hydronium ions. An interactive graph visualizes the formulaic relationship.
This virtual lab allows students to put multiple quantum particles into the same trap to build the ground state, first excited state, etc. of the system. The particles are all identical. The student can change the number of particles and their type (fermions or bosons).
Explore the structure of a liquid at the molecular level. Molecules are always in motion. Molecules in a liquid move moderately. All molecules are attracted to each other. Molecules can be weakly or strongly attracted to each other.
A model to help demonstrate the key factors affecting rates of reaction. Not suitable for generation of rates data but helps students visualise the processes.
Explore the structure of a solid at the molecular level. Molecules are always in motion, though molecules in a solid move slowly. All molecules are attracted to each other. Molecules can be weakly or strongly attracted to each other.
Reduction of anthropogenic carbon emission into the atmosphere is one of the present day's greatest challenges.
Each material has a particular molecular structure, which is responsible for the material's mechanical properties. The molecular structure of each material affects how it responds to an applied force at the macroscopic level.The primary aim of the lab is:
Explore the role of a molecule's mass with respect to its diffusion rate. Diffusion is the process of a substance spreading out from its origin. Molecules diffuse through random molecular motion.
How did Rutherford figure out the structure of the atom without being able to see it? Simulate the famous experiment in which he disproved the Plum Pudding model of the atom by observing alpha particles bouncing off atoms and determining that they must have a small core.
When J.J. Thomson first discovered that a cathode ray was actually a particle beam consisting of a stream of electrons, he concluded that these new particles were not just another type of atom. Explore and compare the behavior of electrons vs.
Explore what happens when a force is exerted on a ceramic material. There are many different types of materials. Each material has a particular molecular structure, which is responsible for the material's mechanical properties.
Explore the role of charge in interatomic interactions. The forces attracting neutral atoms are called Van der Waals attractions, which can be weak or strong, depending on the atoms involved.
Explore the role of polarity in the strength of intermolecular attractions. While all molecules are attracted to each other, some attractions are stronger than others.
This applet is used to explore the relationship between the isotopic ratios of an element and the element's atomic weight. Select any atomic element and manipulate its isotope ratios using the provided pie chart or table.
The objectives of this lab is to help you learn hoe to prepare a standard solution of sodium carbonate and how to determine the strength of a given solution of hydrochloric acid by titrating it against standard sodium carbonate solution.
Are all atoms of an element the same? How can you tell one isotope from another? Use the sim to learn about isotopes and how abundance relates to the average atomic mass of an element.
Using the naming organic molecules lab you can select from a list of numbered molecules and practice in naming them.
13C NMR spectroscopy is a powerful tool to help determine the structure of molecules in organic chemistry, by mapping the framework of C atoms in a molecule.
This lab will allow you to Study the relative reactivity of metals using salt solution.
Explore the role of size and shape in the strength of London dispersion attractions. While all molecules are attracted to each other, some attractions are stronger than others.
Many organic molecules exhibit characteristic vibrational modes that produce spectral features in the infrared region. These provide the experimental basis for identifying functional groups.
This simulation visualizes the repationships between temperature, volume and presure with a help of movable wall. Students can change number of molecules and temperature to see how volume and pressure are affected.
The aim of this lab is to study the comparative cleaning capacity of a sample of soap in soft and hard water.Learning Outcomes
A model of the sodium thiosulphate and hydrochloric acid investigation. It might help some students understand what is going on.
Designed to allow students to access higher evaluation marks by demonstrating an improved measurement method.
This lab helps to better understand the following phenomena:Interaction PotentialAtomic BondingVan der Waals Force
The objective of the simulation is to prepare a mixture and a compound using iron filings and sulphur powder and distinguish between these on the basis of:
Explore what happens when a force is exerted on a tire material. There are many different types of materials. Each material has a particular molecular structure, which is responsible for the material's mechanical properties.
This simulation demonstrates the relationship between the number of molucules of a gas and the volume they occupy.
This simulation visualizes a molecular structure of plastic. Each material has a particular molecular structure, which is responsible for the material's mechanical properties.
The objective of this simulation is to study decomposition reactions.Learning Outcomes
This lab lets a student determine and compare the amount of degradation of two types of plastic: degradable
There are two kinds of attractive forces shown in this model: Coulomb forces (the attraction between ions) and Van der Waals forces (an additional attractive force between all atoms).
This lab allows students to create multiple versions of various atoms and record the number of protons, electrons, and neutrons in a table.
This online workbench allows to determine the concentration of the unknown strong acid and check the answers. Students can use the online versions of the lab equipment to conduct their experiment.
In this activity, students use the virtual lab to create 500mL of 3M HCl solution from a concentrated stock solution of 11.6M HCl. They must first calculate the correct volumes of 11.6M HCl solution and water to mix together to create the final solution.
Conduct the Iodine test with different food items to test for the presence of starch.
In this activity, students use the virtual lab to create a 0.025M glucose solution from a standard 1M glucose solution. First, they calculate the correct volumes of 1M glucose solution and water to mix together to create the final 0.025M solution.
This simulation allows to visualize a process of dissociation of chloride natrium in water.
This lab helps visualise the separation of plant pigments through paper chromatography. Students select different plant extracts and solvents, run the experiment and identify the correct pigment.