🔬 Basic Science

Basic Science Simulators — Where Physics Meets Chemistry

Science education begins with the fundamentals: how objects move, how forces act, how light behaves, how gases expand, and how chemicals react. MechSimulator’s Basic Science category gathers 15 free interactive simulators that bring these foundational concepts to life in the browser. Whether you are a secondary school student exploring Newton’s laws for the first time, a vocational learner revisiting gas laws before an exam, or a teacher looking for zero-cost virtual lab tools, this collection offers hands-on science experiments without the need for physical equipment or laboratory access.

Ray Optics — Mirrors, Lenses & Light

Light is one of the most visually engaging topics in physics. The Ray Optics Simulator lets students drag an object in front of concave mirrors, convex mirrors, converging lenses, and diverging lenses to watch incident and reflected rays drawn in real time. As the object distance changes, the image position, size, and orientation update instantly, reinforcing the mirror formula (1/f = 1/v + 1/u) and the sign convention through direct observation. Students can also switch between mirror and lens modes to compare how reflection and refraction produce similar geometric outcomes through different physical mechanisms. This ray optics simulator is ideal for GCSE Physics, A-Level optics, and any engineering course covering optical instruments, sensors, or laser alignment.

Chemistry — Litmus Tests and the pH Scale

Acid-base chemistry is a cornerstone of secondary science curricula. The Litmus Paper Test Virtual Lab simulates the most recognisable indicator experiment in chemistry: dipping red, blue, and universal pH paper into 15 common chemicals and observing the colour change. Students can test household substances like lemon juice, baking soda, vinegar, and bleach alongside laboratory chemicals, reading the pH value from the universal indicator strip. The animated colour transitions and pH 1–14 scale help build an intuitive sense of the acid-base continuum before students handle real reagents in a physical laboratory. This chemistry virtual lab is especially valuable in settings where chemical supplies are limited or safety restrictions prevent wet lab work.

Gas Laws — Boyle’s, Charles’s & Ideal Gas Law

The three fundamental gas laws describe how pressure, volume, and temperature relate to one another in an enclosed gas sample. The Boyle’s Law Simulator (PV = constant) animates a piston-cylinder with colour-coded gas particles; compressing the piston shows particle collisions increasing as pressure rises at constant temperature, tracing a P-V hyperbola. The Charles’ Law Simulator (V/T = constant) demonstrates isobaric expansion by heating the cylinder, with particle speed visibly increasing and the gas expanding toward absolute zero on the V-T graph. The Ideal Gas Law Simulator (PV = nRT) unifies all three variables, letting students adjust pressure, volume, temperature, and moles simultaneously while observing isothermal, isobaric, and isochoric processes side by side. Together these three tools cover every gas laws simulation topic encountered in GCSE, A-Level, and first-year university chemistry or physics.

Mechanics Foundations — Newton’s Laws, Motion & Forces

Understanding how forces cause motion is the gateway to all engineering disciplines. The Newton’s Laws Simulator demonstrates inertia, F = ma, and action-reaction pairs with interactive free-body diagrams. The Projectile Motion Simulator visualises two-dimensional trajectory under gravity — students adjust launch angle and initial velocity, then observe how horizontal range, maximum height, and time of flight change. The Free Fall Simulator isolates vertical motion under gravity (s = ½gt²) and lets students compare gravitational acceleration on Earth, Moon, Mars, and Jupiter.

Oscillatory motion is covered by two complementary simulators. The Simple Harmonic Motion Simulator animates a spring-mass system and simple pendulum, plotting displacement, velocity, and energy graphs in phase. The Hooke’s Law Simulator focuses on the spring force relationship (F = kx), allowing springs in series and parallel configurations with elastic potential energy calculated automatically. For contact mechanics, the Friction Simulator covers static and kinetic friction on flat, inclined, and braking scenarios across eight material pairs, making abstract coefficients tangible through animated block motion and force arrows. Finally, the Pascal’s Law and Bernoulli’s Principle simulators extend Newtonian ideas into fluid physics — demonstrating pressure transmission and the Venturi effect that underpin hydraulic machines and aerodynamics.

Thermal Properties — Heat, Expansion & Specific Heat

The Specific Heat Capacity Simulator uses Q = mcΔT to compare how six different materials absorb heat from an animated flame, plotting temperature rise curves and revealing why metals heat up faster than water. The Thermal Expansion Calculator demonstrates linear expansion across ten materials and includes a bimetallic strip mode that shows how differential expansion is used in thermostats and temperature switches. These two tools provide an accessible entry point to thermodynamics before students progress to the more advanced cycles in the Thermal & Fluid Engineering category.

Explore All Science Categories

Once you have mastered the basic science fundamentals, continue building your knowledge with the full range of MechSimulator categories. Progress to applied physics with the Mechanics & Motion simulators covering gyroscopes, vibrations, and torque. Explore the connection between physics and engineering in the Thermal & Fluid Engineering collection featuring thermodynamic cycles, heat exchangers, and wind tunnels. For chemistry-to-engineering bridges, the Virtual Lab Testing category offers material testing experiments including tensile testing, impact testing, and hardness measurement.