Watch a reaction proceed over time. How does total energy affect a reaction rate? Vary temperature, barrier height, and potential energies. Record concentrations and time in order to extract rate coefficients. Do temperature dependent studies to extract Arrhenius parameters. This simulation is best used with teacher guidance because it presents an analogy of chemical reactions.

Experiment with a helium balloon, a hot air balloon, or a rigid sphere filled with different gases. Discover what makes some balloons float and others sink.

Pump gas molecules to a box and see what happens as you change the volume, add or remove heat, and more. Measure the temperature and pressure, and discover how the properties of the gas vary in relation to each other. Examine kinetic energy and speed histograms for light and heavy particles. Explore diffusion and determine how concentration, temperature, mass, and radius affect the rate of diffusion.

Mescola due gas per esplorare la diffusione! Sperimenta concentrazione, temperatura, massa e raggio e determina in che modo questi fattori influenzano la velocità di diffusione.

Pompa molecole di gas in una scatola e vedi cosa succede quando si modifica il volume, si aggiunge o si rimuove il calore e altro ancora. Misura la temperatura e la pressione e scopri come le proprietà del gas variano l'una rispetto all'altra.

Pompa molecole di gas in una scatola e vedi cosa succede quando modifichi il volume, aggiungi o rimuovi il calore e altro ancora. Misura la temperatura e la pressione e scopri come le proprietà del gas variano l'una rispetto all'altra. Esamina l'energia cinetica e gli istogrammi di velocità per particelle leggere e pesanti. Esplora la diffusione e determina in che modo concentrazione, temperatura, massa e raggio influiscono sulla velocità di diffusione.

Turn light source on to explore. Observe what happens in the observation window as you set up different combinations of light source and molecule. Note this simulation is the first to support our pan and zoom feature, so zoom in for a closer look, if you need to.

Explore how heating and cooling iron, brick, water, and olive oil adds or removes energy. See how energy is transferred between objects. Build your own system, with energy sources, changers, and users. Track and visualize how energy flows and changes through your system.

Why do some materials like wood float in water, and others don’t? Interact with blocks of different materials, including a custom option by modifying their mass and volume, to explore the effect on the density and discover the conditions for sinking or floating in water. Play detective to determine the material of each block by comparing its density with the values in the table.

Build your own system of heavenly bodies and watch the gravitational ballet. With this orbit simulator, you can set initial positions, velocities, and masses of 2, 3, or 4 bodies, and then see them orbit each other.

When will objects float and when will they sink? Learn how buoyancy works with blocks. Arrows show the applied forces, and you can modify the properties of the blocks and the fluid.

Explore pressure under and above water. See how pressure changes as you change fluids, gravity, container shapes, and volume.

Explore pressure in the atmosphere and underwater. Reshape a pipe to see how it changes fluid flow speed. Experiment with a leaky water tower to see how the height and water level determine the water trajectory.

Muovi il Sole, la Terra, la Luna ed una stazione spaziale per vedere come si influenzano reciprocamente le forze gravitazionali e le loro orbite. Visualizza le dimensioni e le distanze tra diversi corpi celesti, ed elimina la forza di gravità per vedere cosa succede senza di essa!

Investigate simple collisions in 1D and more complex collisions in 2D. Experiment with the number of balls, masses, and initial conditions. Vary the elasticity and see how the total momentum and kinetic energy change during collisions.

Analizza collisioni semplici unidimensionali e collisioni più complesse bidimensonali. Fai esperimenti con il numero di palline, le masse e le condizioni iniziali. Varia l'elasticità e osserva come cambiano la quantità di moto totale e l'energia cinetica durante le collisioni.

Impara tutto sulla conservazione di energia allo skater! Costruisci percorsi, rampe e salti per lo skater. Osserva l'energia cinetica, potenziale e termica dello skater mentre si muove sulla pista. Misura la velocità e regola attrito, gravità e massa.

Learn about the conservation of energy at the skate park! Build tracks, ramps, and jumps for the skater. View the skater's kinetic energy, potential energy, and thermal energy as they move along the track. Measure the speed and adjust the friction, gravity, and mass.

Try the new "Ladybug Motion 2D" simulation for the latest updated version. Learn about position, velocity, and acceleration vectors. Move the ball with the mouse or let the simulation move the ball in four types of motion (2 types of linear, simple harmonic, circle).

Can you avoid the boulder field and land safely, just before your fuel runs out, as Neil Armstrong did in 1969? Our version of this classic video game accurately simulates the real motion of the lunar lander with the correct mass, thrust, fuel consumption rate, and lunar gravity. The real lunar lander is very hard to control.

Spara un'auto con un cannone e prova di colpire il bersaglio! Impara tutto sul moto di un proiettile sparando vari oggetti. Imposta parametri come angolo, velocità iniziale e massa. Esplora la rappresentazione vettoriale e aggiungi la resistenza dell'aria per capire i fattori che influenzano la traiettoria.

Explore the forces at work when you try to push a filing cabinet. Create an applied force and see the resulting friction force and total force acting on the cabinet. Charts show the forces, position, velocity, and acceleration vs. time. View a Free Body Diagram of all the forces (including gravitational and normal forces).

Explore the forces at work when pulling against a cart, and pushing a refrigerator, crate, or person. Create an applied force and see how it makes objects move. Change friction and see how it affects the motion of objects.

Explore the forces at work when you try to push a filing cabinet. Create an applied force and see the resulting friction force and total force acting on the cabinet. Charts show the forces, position, velocity, and acceleration vs. time. View a Free Body Diagram of all the forces (including gravitational and normal forces).

Learn about position, velocity and acceleration vectors. Move the ladybug by setting the position, velocity or acceleration, and see how the vectors change. Choose linear, circular or elliptical motion, and record and playback the motion to analyze the behavior.

Join the ladybug in an exploration of rotational motion. Rotate the merry-go-round to change its angle, or choose a constant angular velocity or angular acceleration. Explore how circular motion relates to the bug's x,y position, velocity, and acceleration using vectors or graphs.

Learn about position, velocity, and acceleration in the "Arena of Pain". Use the green arrow to move the ball. Add more walls to the arena to make the game more difficult. Try to make a goal as fast as you can.

Sperimenta con le equazioni vettoriali e confronta somme e differenze di vettori. Personalizza i vettori base o esplora il prodotto scalare regolando i coefficienti nell'equazione. Scegli le coordinate del vettore tra cartesiane o polari, e osserva il modulo, l'angolo, e i componenti di ciascun vettore.

Esplora i vettori in una o due dimensioni e scopri come i vettori si sommano. Scegli i vettori in coordinate cartesiane o polari e osserva il modulo, l'angolo e i componenti di ciascun vettore. Fai esperienza con equazioni vettoriali e confronta somme e differenze vettoriali.