एसिडअड्डोंसंतुलनपृथक्करणसमाधान रासायनिक समीकरणोंबिजली

Topics

Acids

Bases

Equilibrium

Dissociation

Solutions

Description

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. Can a weak acid solution have the same pH as a strong acid solution?

Topics

Interaction Potential

Atomic Bonding

Van der Waals Force

Pauli Repulsion

Lennard-Jones Potential

Atomic Interactions

Description

Explore the interactions between various combinations of two atoms. Observe the the total force acting on the atoms or the individual attractive and repulsive forces. Customize the attraction to see how

Topics

Chemical Equations

Conservation of Mass

Description

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!

Sample Learning Goals

Balance a chemical equation.

Recognize that the number of atoms of each element is conserved in a chemical reaction.

Describe the difference between coefficients and subscripts in a chemical equation.

Translate from symbolic to molecular representations of matter.

Topics

Static Electricity

Electric Charges

Electric Force

Description

Why does a balloon stick to your sweater? Explore the charges in the sweater, balloons, and the wall as you investigate!

Beer's law

Solutions

Concentration

Molarity

Light

Absorbance

Transmittance

Spectrophotometry

Description

“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!

Topics

Atoms

Atomic Structure

Isotope Symbols

Atomic Nuclei

Description

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!

Topics

Solutions

Concentration

Saturation

Molarity

Moles

Volume

Solubility

Description

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? Switch solutes to compare different chemicals and find out how concentrated you can go before you hit saturation!

Topics

Isotopes

Atomic Mass

Description

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.

Topics

Solutions

Molarity

Moles

Volume

Solubility

Saturation

Description

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.

Topics

Molecules

Photons

Absorption

Light

Description

Adjust light source slider and begin your observations of how different molecules react to different light sources. Note that the interactive elements in this sim have simple description that can be accessed using a screen reader.

Topics

Molecules

VSEPR

Lone Pairs

Bonds

Description

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!

Topics

Molecules

Atoms

Bonds

Bond angle

Description

Explore molecule shapes by building molecules in 3D! Find out how a molecule's shape changes as you add atoms to a molecule.

Topics

pH

Dilution

Concentration

Acids

Bases

Topics

Chemical Reactions